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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/170254">170254</a></dd>
<dt>Author</dt> <dd>mitz@apple.com</dd>
<dt>Date</dt> <dd>2014-06-21 15:25:34 -0700 (Sat, 21 Jun 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>CallbackMap::put should be able to take an unwrapped function
https://bugs.webkit.org/show_bug.cgi?id=134104

Reviewed by Anders Carlsson.

* UIProcess/GenericCallback.h:
(WebKit::CallbackMap::put): Added an overload that takes a function and creates and puts a
callback. Changed both overloads of put() to return the callback ID.

* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::validateCommand):
(WebKit::WebPageProxy::runJavaScriptInMainFrame):
(WebKit::WebPageProxy::getRenderTreeExternalRepresentation):
(WebKit::WebPageProxy::getSourceForFrame):
(WebKit::WebPageProxy::getContentsAsString):
(WebKit::WebPageProxy::getBytecodeProfile):
(WebKit::WebPageProxy::getContentsAsMHTMLData):
(WebKit::WebPageProxy::getSelectionOrContentsAsString):
(WebKit::WebPageProxy::getSelectionAsWebArchiveData):
(WebKit::WebPageProxy::getMainResourceDataOfFrame):
(WebKit::WebPageProxy::getResourceDataFromFrame):
(WebKit::WebPageProxy::getWebArchiveOfFrame):
(WebKit::WebPageProxy::getMarkedRangeAsync):
(WebKit::WebPageProxy::getSelectedRangeAsync):
(WebKit::WebPageProxy::characterIndexForPointAsync):
(WebKit::WebPageProxy::firstRectForCharacterRangeAsync):
(WebKit::WebPageProxy::takeSnapshot):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebKit2ChangeLog">trunk/Source/WebKit2/ChangeLog</a></li>
<li><a href="#trunkSourceWebKit2UIProcessGenericCallbackh">trunk/Source/WebKit2/UIProcess/GenericCallback.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebPageProxycpp">trunk/Source/WebKit2/UIProcess/WebPageProxy.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/ChangeLog (170253 => 170254)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog        2014-06-21 22:02:26 UTC (rev 170253)
+++ trunk/Source/WebKit2/ChangeLog        2014-06-21 22:25:34 UTC (rev 170254)
</span><span class="lines">@@ -1,3 +1,33 @@
</span><ins>+2014-06-21  Dan Bernstein  &lt;mitz@apple.com&gt;
+
+        CallbackMap::put should be able to take an unwrapped function
+        https://bugs.webkit.org/show_bug.cgi?id=134104
+
+        Reviewed by Anders Carlsson.
+
+        * UIProcess/GenericCallback.h:
+        (WebKit::CallbackMap::put): Added an overload that takes a function and creates and puts a
+        callback. Changed both overloads of put() to return the callback ID.
+
+        * UIProcess/WebPageProxy.cpp:
+        (WebKit::WebPageProxy::validateCommand):
+        (WebKit::WebPageProxy::runJavaScriptInMainFrame):
+        (WebKit::WebPageProxy::getRenderTreeExternalRepresentation):
+        (WebKit::WebPageProxy::getSourceForFrame):
+        (WebKit::WebPageProxy::getContentsAsString):
+        (WebKit::WebPageProxy::getBytecodeProfile):
+        (WebKit::WebPageProxy::getContentsAsMHTMLData):
+        (WebKit::WebPageProxy::getSelectionOrContentsAsString):
+        (WebKit::WebPageProxy::getSelectionAsWebArchiveData):
+        (WebKit::WebPageProxy::getMainResourceDataOfFrame):
+        (WebKit::WebPageProxy::getResourceDataFromFrame):
+        (WebKit::WebPageProxy::getWebArchiveOfFrame):
+        (WebKit::WebPageProxy::getMarkedRangeAsync):
+        (WebKit::WebPageProxy::getSelectedRangeAsync):
+        (WebKit::WebPageProxy::characterIndexForPointAsync):
+        (WebKit::WebPageProxy::firstRectForCharacterRangeAsync):
+        (WebKit::WebPageProxy::takeSnapshot):
+
</ins><span class="cx"> 2014-06-21  Anders Carlsson  &lt;andersca@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Make it possible to override debug preferences on a per-identifier basis as well as globally
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessGenericCallbackh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/GenericCallback.h (170253 => 170254)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/GenericCallback.h        2014-06-21 22:02:26 UTC (rev 170253)
+++ trunk/Source/WebKit2/UIProcess/GenericCallback.h        2014-06-21 22:25:34 UTC (rev 170254)
</span><span class="lines">@@ -167,12 +167,32 @@
</span><span class="cx"> 
</span><span class="cx"> class CallbackMap {
</span><span class="cx"> public:
</span><del>-    void put(PassRefPtr&lt;CallbackBase&gt; callback)
</del><ins>+    uint64_t put(PassRefPtr&lt;CallbackBase&gt; callback)
</ins><span class="cx">     {
</span><span class="cx">         ASSERT(!m_map.contains(callback-&gt;callbackID()));
</span><del>-        m_map.set(callback-&gt;callbackID(), callback);
</del><ins>+
+        uint64_t callbackID = callback-&gt;callbackID();
+        m_map.set(callbackID, callback);
+        return callbackID;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    template&lt;unsigned I, typename T, typename... U&gt;
+    struct GenericCallbackType {
+        typedef typename GenericCallbackType&lt;I - 1, U..., T&gt;::type type;
+    };
+
+    template&lt;typename... U&gt;
+    struct GenericCallbackType&lt;1, CallbackBase::Error, U...&gt; {
+        typedef GenericCallback&lt;U...&gt; type;
+    };
+
+    template&lt;typename... T&gt;
+    uint64_t put(std::function&lt;void (T...)&gt; function)
+    {
+        auto callback = GenericCallbackType&lt;sizeof...(T), T...&gt;::type::create(std::move(function));
+        return put(callback);
+    }
+
</ins><span class="cx">     template&lt;class T&gt;
</span><span class="cx">     RefPtr&lt;T&gt; take(uint64_t callbackID)
</span><span class="cx">     {
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebPageProxycpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebPageProxy.cpp (170253 => 170254)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebPageProxy.cpp        2014-06-21 22:02:26 UTC (rev 170253)
+++ trunk/Source/WebKit2/UIProcess/WebPageProxy.cpp        2014-06-21 22:25:34 UTC (rev 170254)
</span><span class="lines">@@ -1241,15 +1241,12 @@
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::validateCommand(const String&amp; commandName, std::function&lt;void (const String&amp;, bool, int32_t, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;ValidateCommandCallback&gt; callback = ValidateCommandCallback::create(std::move(callbackFunction));
-
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), false, 0, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::ValidateCommand(commandName, callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -2187,149 +2184,127 @@
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::runJavaScriptInMainFrame(const String&amp; script, std::function&lt;void (WebSerializedScriptValue*, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;ScriptValueCallback&gt; callback = ScriptValueCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::RunJavaScriptInMainFrame(script, callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getRenderTreeExternalRepresentation(std::function&lt;void (const String&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;StringCallback&gt; callback = StringCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetRenderTreeExternalRepresentation(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getSourceForFrame(WebFrameProxy* frame, std::function&lt;void (const String&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;StringCallback&gt; callback = StringCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_loadDependentStringCallbackIDs.add(callbackID);
</span><del>-    m_callbacks.put(callback);
</del><span class="cx">     m_process-&gt;send(Messages::WebPage::GetSourceForFrame(frame-&gt;frameID(), callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getContentsAsString(std::function&lt;void (const String&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;StringCallback&gt; callback = StringCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_loadDependentStringCallbackIDs.add(callbackID);
</span><del>-    m_callbacks.put(callback);
</del><span class="cx">     m_process-&gt;send(Messages::WebPage::GetContentsAsString(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getBytecodeProfile(std::function&lt;void (const String&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;StringCallback&gt; callback = StringCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_loadDependentStringCallbackIDs.add(callbackID);
</span><del>-    m_callbacks.put(callback);
</del><span class="cx">     m_process-&gt;send(Messages::WebPage::GetBytecodeProfile(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx">     
</span><span class="cx"> #if ENABLE(MHTML)
</span><span class="cx"> void WebPageProxy::getContentsAsMHTMLData(std::function&lt;void (API::Data*, CallbackBase::Error)&gt; callbackFunction, bool useBinaryEncoding)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;DataCallback&gt; callback = DataCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetContentsAsMHTMLData(callbackID, useBinaryEncoding), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getSelectionOrContentsAsString(std::function&lt;void (const String&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;StringCallback&gt; callback = StringCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(String(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetSelectionOrContentsAsString(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getSelectionAsWebArchiveData(std::function&lt;void (API::Data*, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;DataCallback&gt; callback = DataCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetSelectionAsWebArchiveData(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getMainResourceDataOfFrame(WebFrameProxy* frame, std::function&lt;void (API::Data*, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;DataCallback&gt; callback = DataCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid() || !frame) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetMainResourceDataOfFrame(frame-&gt;frameID(), callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getResourceDataFromFrame(WebFrameProxy* frame, API::URL* resourceURL, std::function&lt;void (API::Data*, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;DataCallback&gt; callback = DataCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetResourceDataFromFrame(frame-&gt;frameID(), resourceURL-&gt;string(), callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getWebArchiveOfFrame(WebFrameProxy* frame, std::function&lt;void (API::Data*, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;DataCallback&gt; callback = DataCallback::create(std::move(callbackFunction));
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(nullptr, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::GetWebArchiveOfFrame(frame-&gt;frameID(), callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -4968,16 +4943,12 @@
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::getMarkedRangeAsync(std::function&lt;void (EditingRange, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;EditingRangeCallback&gt; callback = EditingRangeCallback::create(std::move(callbackFunction));
-
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(EditingRange(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
-
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     process().send(Messages::WebPage::GetMarkedRangeAsync(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -4990,39 +4961,29 @@
</span><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
-
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     process().send(Messages::WebPage::GetSelectedRangeAsync(callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::characterIndexForPointAsync(const WebCore::IntPoint&amp; point, std::function&lt;void (uint64_t, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;UnsignedCallback&gt; callback = UnsignedCallback::create(std::move(callbackFunction));
-
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(0, CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
-
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     process().send(Messages::WebPage::CharacterIndexForPointAsync(point, callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::firstRectForCharacterRangeAsync(const EditingRange&amp; range, std::function&lt;void (const WebCore::IntRect&amp;, const EditingRange&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;RectForCharacterRangeCallback&gt; callback = RectForCharacterRangeCallback::create(std::move(callbackFunction));
-
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(WebCore::IntRect(), EditingRange(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
-
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     process().send(Messages::WebPage::FirstRectForCharacterRangeAsync(range, callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -5049,16 +5010,12 @@
</span><span class="cx"> 
</span><span class="cx"> void WebPageProxy::takeSnapshot(IntRect rect, IntSize bitmapSize, SnapshotOptions options, std::function&lt;void (const ShareableBitmap::Handle&amp;, CallbackBase::Error)&gt; callbackFunction)
</span><span class="cx"> {
</span><del>-    RefPtr&lt;ImageCallback&gt; callback = ImageCallback::create(std::move(callbackFunction));
-
</del><span class="cx">     if (!isValid()) {
</span><del>-        callback-&gt;invalidate();
</del><ins>+        callbackFunction(ShareableBitmap::Handle(), CallbackBase::Error::Unknown);
</ins><span class="cx">         return;
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    uint64_t callbackID = callback-&gt;callbackID();
-    m_callbacks.put(callback);
-
</del><ins>+    uint64_t callbackID = m_callbacks.put(std::move(callbackFunction));
</ins><span class="cx">     m_process-&gt;send(Messages::WebPage::TakeSnapshot(rect, bitmapSize, options, callbackID), m_pageID);
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre>
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