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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/185445">185445</a></dd>
<dt>Author</dt> <dd>andersca@apple.com</dd>
<dt>Date</dt> <dd>2015-06-10 19:34:03 -0700 (Wed, 10 Jun 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>WKWebsiteDataStore should handle removing plug-in data for individual records
https://bugs.webkit.org/show_bug.cgi?id=145864

Reviewed by Beth Dakin.

* PluginProcess/PluginProcess.cpp:
(WebKit::PluginProcess::deleteWebsiteDataForHostNames):
* PluginProcess/PluginProcess.h:
* PluginProcess/PluginProcess.messages.in:
* UIProcess/Plugins/PluginProcessManager.cpp:
(WebKit::PluginProcessManager::deleteWebsiteDataForHostNames):
* UIProcess/Plugins/PluginProcessManager.h:
* UIProcess/Plugins/PluginProcessProxy.cpp:
(WebKit::PluginProcessProxy::deleteWebsiteDataForHostNames):
(WebKit::PluginProcessProxy::pluginProcessCrashedOrFailedToLaunch):
(WebKit::PluginProcessProxy::didFinishLaunching):
(WebKit::PluginProcessProxy::didDeleteWebsiteDataForHostNames):
* UIProcess/Plugins/PluginProcessProxy.h:
* UIProcess/Plugins/PluginProcessProxy.messages.in:
* UIProcess/WebsiteData/WebsiteDataStore.cpp:
(WebKit::WebsiteDataStore::removeData):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebKit2ChangeLog">trunk/Source/WebKit2/ChangeLog</a></li>
<li><a href="#trunkSourceWebKit2PluginProcessPluginProcesscpp">trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp</a></li>
<li><a href="#trunkSourceWebKit2PluginProcessPluginProcessh">trunk/Source/WebKit2/PluginProcess/PluginProcess.h</a></li>
<li><a href="#trunkSourceWebKit2PluginProcessPluginProcessmessagesin">trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in</a></li>
<li><a href="#trunkSourceWebKit2UIProcessPluginsPluginProcessManagercpp">trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessPluginsPluginProcessManagerh">trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessPluginsPluginProcessProxycpp">trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessPluginsPluginProcessProxyh">trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessPluginsPluginProcessProxymessagesin">trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebsiteDataWebsiteDataStorecpp">trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/ChangeLog (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/ChangeLog        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -1,5 +1,29 @@
</span><span class="cx"> 2015-06-10  Anders Carlsson  &lt;andersca@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        WKWebsiteDataStore should handle removing plug-in data for individual records
+        https://bugs.webkit.org/show_bug.cgi?id=145864
+
+        Reviewed by Beth Dakin.
+
+        * PluginProcess/PluginProcess.cpp:
+        (WebKit::PluginProcess::deleteWebsiteDataForHostNames):
+        * PluginProcess/PluginProcess.h:
+        * PluginProcess/PluginProcess.messages.in:
+        * UIProcess/Plugins/PluginProcessManager.cpp:
+        (WebKit::PluginProcessManager::deleteWebsiteDataForHostNames):
+        * UIProcess/Plugins/PluginProcessManager.h:
+        * UIProcess/Plugins/PluginProcessProxy.cpp:
+        (WebKit::PluginProcessProxy::deleteWebsiteDataForHostNames):
+        (WebKit::PluginProcessProxy::pluginProcessCrashedOrFailedToLaunch):
+        (WebKit::PluginProcessProxy::didFinishLaunching):
+        (WebKit::PluginProcessProxy::didDeleteWebsiteDataForHostNames):
+        * UIProcess/Plugins/PluginProcessProxy.h:
+        * UIProcess/Plugins/PluginProcessProxy.messages.in:
+        * UIProcess/WebsiteData/WebsiteDataStore.cpp:
+        (WebKit::WebsiteDataStore::removeData):
+
+2015-06-10  Anders Carlsson  &lt;andersca@apple.com&gt;
+
</ins><span class="cx">         WKWebsiteDataStore should handle removing plug-in data
</span><span class="cx">         https://bugs.webkit.org/show_bug.cgi?id=145862
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebKit2PluginProcessPluginProcesscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -229,6 +229,16 @@
</span><span class="cx">     parentProcessConnection()-&gt;send(Messages::PluginProcessProxy::DidDeleteWebsiteData(callbackID), 0);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcess::deleteWebsiteDataForHostNames(const Vector&lt;String&gt;&amp; hostNames, uint64_t callbackID)
+{
+    if (auto* module = netscapePluginModule()) {
+        for (auto&amp; hostName : hostNames)
+            module-&gt;clearSiteData(hostName, NP_CLEAR_ALL, std::numeric_limits&lt;uint64_t&gt;::max());
+    }
+
+    parentProcessConnection()-&gt;send(Messages::PluginProcessProxy::DidDeleteWebsiteDataForHostNames(callbackID), 0);
+}
+
</ins><span class="cx"> void PluginProcess::setMinimumLifetime(double lifetime)
</span><span class="cx"> {
</span><span class="cx">     if (lifetime &lt;= 0.0)
</span></span></pre></div>
<a id="trunkSourceWebKit2PluginProcessPluginProcessh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/PluginProcess/PluginProcess.h (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.h        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.h        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -102,6 +102,7 @@
</span><span class="cx">     void getSitesWithData(uint64_t callbackID);
</span><span class="cx">     void clearSiteData(const Vector&lt;String&gt;&amp; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID);
</span><span class="cx">     void deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, uint64_t callbackID);
</span><ins>+    void deleteWebsiteDataForHostNames(const Vector&lt;String&gt;&amp; hostNames, uint64_t callbackID);
</ins><span class="cx"> 
</span><span class="cx">     // AudioHardwareListenerClient
</span><span class="cx">     virtual void audioHardwareDidBecomeActive() override;
</span></span></pre></div>
<a id="trunkSourceWebKit2PluginProcessPluginProcessmessagesin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -40,6 +40,7 @@
</span><span class="cx">     ClearSiteData(Vector&lt;String&gt; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID)
</span><span class="cx"> 
</span><span class="cx">     DeleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, uint64_t callbackID)
</span><ins>+    DeleteWebsiteDataForHostNames(Vector&lt;String&gt; hostNames, uint64_t callbackID)
</ins><span class="cx"> 
</span><span class="cx">     SetProcessSuppressionEnabled(bool flag)
</span><span class="cx"> #if PLATFORM(COCOA)
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessManagercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -109,6 +109,12 @@
</span><span class="cx">     pluginProcess-&gt;deleteWebsiteData(modifiedSince, WTF::move(completionHandler));
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessManager::deleteWebsiteDataForHostNames(const PluginModuleInfo&amp; plugin, const Vector&lt;String&gt;&amp; hostNames, std::function&lt;void ()&gt; completionHandler)
+{
+    PluginProcessProxy* pluginProcess = getOrCreatePluginProcess(pluginProcessToken(plugin, PluginProcessTypeNormal, PluginProcessSandboxPolicyNormal));
+    pluginProcess-&gt;deleteWebsiteDataForHostNames(hostNames, WTF::move(completionHandler));
+}
+
</ins><span class="cx"> void PluginProcessManager::clearSiteData(const PluginModuleInfo&amp; plugin, WebPluginSiteDataManager* webPluginSiteDataManager, const Vector&lt;String&gt;&amp; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID)
</span><span class="cx"> {
</span><span class="cx">     PluginProcessProxy* pluginProcess = getOrCreatePluginProcess(pluginProcessToken(plugin, PluginProcessTypeNormal, PluginProcessSandboxPolicyNormal));
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessManagerh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -64,6 +64,7 @@
</span><span class="cx"> 
</span><span class="cx">     void fetchWebsiteData(const PluginModuleInfo&amp;, std::function&lt;void (Vector&lt;String&gt;)&gt; completionHandler);
</span><span class="cx">     void deleteWebsiteData(const PluginModuleInfo&amp;, std::chrono::system_clock::time_point modifiedSince, std::function&lt;void ()&gt; completionHandler);
</span><ins>+    void deleteWebsiteDataForHostNames(const PluginModuleInfo&amp;, const Vector&lt;String&gt;&amp; hostNames, std::function&lt;void ()&gt; completionHandler);
</ins><span class="cx">     void clearSiteData(const PluginModuleInfo&amp;, WebPluginSiteDataManager*, const Vector&lt;String&gt;&amp; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID);
</span><span class="cx"> 
</span><span class="cx"> #if PLATFORM(COCOA)
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessProxycpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -136,6 +136,19 @@
</span><span class="cx">     m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteData(modifiedSince, callbackID), 0);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessProxy::deleteWebsiteDataForHostNames(const Vector&lt;String&gt;&amp; hostNames, std::function&lt;void ()&gt; completionHandler)
+{
+    uint64_t callbackID = generateCallbackID();
+    m_pendingDeleteWebsiteDataForHostNamesCallbacks.set(callbackID, WTF::move(completionHandler));
+
+    if (state() == State::Launching) {
+        m_pendingDeleteWebsiteDataForHostNamesRequests.append({ hostNames, callbackID });
+        return;
+    }
+
+    m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteDataForHostNames(hostNames, callbackID), 0);
+}
+
</ins><span class="cx"> void PluginProcessProxy::clearSiteData(WebPluginSiteDataManager* webPluginSiteDataManager, const Vector&lt;String&gt;&amp; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID)
</span><span class="cx"> {
</span><span class="cx">     ASSERT(!m_pendingClearSiteDataReplies.contains(callbackID));
</span><span class="lines">@@ -180,6 +193,11 @@
</span><span class="cx">         callback();
</span><span class="cx">     m_pendingDeleteWebsiteDataRequests.clear();
</span><span class="cx"> 
</span><ins>+    m_pendingDeleteWebsiteDataForHostNamesRequests.clear();
+    for (const auto&amp; callback : m_pendingDeleteWebsiteDataForHostNamesCallbacks.values())
+        callback();
+    m_pendingDeleteWebsiteDataForHostNamesCallbacks.clear();
+
</ins><span class="cx">     while (!m_pendingClearSiteDataReplies.isEmpty())
</span><span class="cx">         didClearSiteData(m_pendingClearSiteDataReplies.begin()-&gt;key);
</span><span class="cx"> 
</span><span class="lines">@@ -247,10 +265,14 @@
</span><span class="cx">         m_connection-&gt;send(Messages::PluginProcess::GetSitesWithData(callbackID), 0);
</span><span class="cx">     m_pendingFetchWebsiteDataRequests.clear();
</span><span class="cx"> 
</span><del>-    for (auto&amp; deleteWebsiteDataRequest : m_pendingDeleteWebsiteDataRequests)
-        m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteData(deleteWebsiteDataRequest.modifiedSince, deleteWebsiteDataRequest.callbackID), 0);
</del><ins>+    for (auto&amp; request : m_pendingDeleteWebsiteDataRequests)
+        m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteData(request.modifiedSince, request.callbackID), 0);
</ins><span class="cx">     m_pendingDeleteWebsiteDataRequests.clear();
</span><span class="cx"> 
</span><ins>+    for (auto&amp; request : m_pendingDeleteWebsiteDataForHostNamesRequests)
+        m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteDataForHostNames(request.hostNames, request.callbackID), 0);
+    m_pendingDeleteWebsiteDataForHostNamesRequests.clear();
+
</ins><span class="cx">     for (size_t i = 0; i &lt; m_pendingClearSiteDataRequests.size(); ++i) {
</span><span class="cx">         const ClearSiteDataRequest&amp; request = m_pendingClearSiteDataRequests[i];
</span><span class="cx">         m_connection-&gt;send(Messages::PluginProcess::ClearSiteData(request.sites, request.flags, request.maxAgeInSeconds, request.callbackID), 0);
</span><span class="lines">@@ -304,6 +326,12 @@
</span><span class="cx">     callback();
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessProxy::didDeleteWebsiteDataForHostNames(uint64_t callbackID)
+{
+    auto callback = m_pendingDeleteWebsiteDataForHostNamesCallbacks.take(callbackID);
+    callback();
+}
+
</ins><span class="cx"> } // namespace WebKit
</span><span class="cx"> 
</span><span class="cx"> #endif // ENABLE(NETSCAPE_PLUGIN_API)
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessProxyh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -81,6 +81,7 @@
</span><span class="cx"> 
</span><span class="cx">     void fetchWebsiteData(std::function&lt;void (Vector&lt;String&gt;)&gt; completionHandler);
</span><span class="cx">     void deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, std::function&lt;void ()&gt; completionHandler);
</span><ins>+    void deleteWebsiteDataForHostNames(const Vector&lt;String&gt;&amp; hostNames, std::function&lt;void ()&gt; completionHandler);
</ins><span class="cx"> 
</span><span class="cx">     // Asks the plug-in process to clear the data for the given sites.
</span><span class="cx">     void clearSiteData(WebPluginSiteDataManager*, const Vector&lt;String&gt;&amp; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID);
</span><span class="lines">@@ -130,6 +131,7 @@
</span><span class="cx">     void didGetSitesWithData(const Vector&lt;String&gt;&amp; sites, uint64_t callbackID);
</span><span class="cx">     void didClearSiteData(uint64_t callbackID);
</span><span class="cx">     void didDeleteWebsiteData(uint64_t callbackID);
</span><ins>+    void didDeleteWebsiteDataForHostNames(uint64_t callbackID);
</ins><span class="cx"> 
</span><span class="cx"> #if PLATFORM(COCOA)
</span><span class="cx">     bool getPluginProcessSerialNumber(ProcessSerialNumber&amp;);
</span><span class="lines">@@ -175,6 +177,13 @@
</span><span class="cx">     Vector&lt;DeleteWebsiteDataRequest&gt; m_pendingDeleteWebsiteDataRequests;
</span><span class="cx">     HashMap&lt;uint64_t, std::function&lt;void ()&gt;&gt; m_pendingDeleteWebsiteDataCallbacks;
</span><span class="cx"> 
</span><ins>+    struct DeleteWebsiteDataForHostNamesRequest {
+        Vector&lt;String&gt; hostNames;
+        uint64_t callbackID;
+    };
+    Vector&lt;DeleteWebsiteDataForHostNamesRequest&gt; m_pendingDeleteWebsiteDataForHostNamesRequests;
+    HashMap&lt;uint64_t, std::function&lt;void ()&gt;&gt; m_pendingDeleteWebsiteDataForHostNamesCallbacks;
+
</ins><span class="cx">     struct ClearSiteDataRequest {
</span><span class="cx">         Vector&lt;String&gt; sites;
</span><span class="cx">         uint64_t flags;
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessProxymessagesin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -28,6 +28,7 @@
</span><span class="cx">     DidGetSitesWithData(Vector&lt;String&gt; sites, uint64_t callbackID)
</span><span class="cx">     DidClearSiteData(uint64_t callbackID)
</span><span class="cx">     DidDeleteWebsiteData(uint64_t callbackID)
</span><ins>+    DidDeleteWebsiteDataForHostNames(uint64_t callbackID)
</ins><span class="cx"> 
</span><span class="cx"> #if PLATFORM(COCOA)
</span><span class="cx">     SetModalWindowIsShowing(bool modalWindowIsShowing)
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebsiteDataWebsiteDataStorecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp (185444 => 185445)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp        2015-06-11 02:01:46 UTC (rev 185444)
+++ trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp        2015-06-11 02:34:03 UTC (rev 185445)
</span><span class="lines">@@ -862,6 +862,62 @@
</span><span class="cx">         });
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+#if ENABLE(NETSCAPE_PLUGIN_API)
+    if (dataTypes &amp; WebsiteDataTypePlugInData &amp;&amp; isPersistent()) {
+        Vector&lt;String&gt; hostNames;
+        for (const auto&amp; dataRecord : dataRecords) {
+            for (const auto&amp; hostName : dataRecord.pluginDataHostNames)
+                hostNames.append(hostName);
+        }
+
+
+        class State {
+        public:
+            static void deleteData(Ref&lt;CallbackAggregator&gt;&amp;&amp; callbackAggregator, Vector&lt;PluginModuleInfo&gt;&amp;&amp; plugins, Vector&lt;String&gt;&amp;&amp; hostNames)
+            {
+                new State(WTF::move(callbackAggregator), WTF::move(plugins), WTF::move(hostNames));
+            }
+
+        private:
+            State(Ref&lt;CallbackAggregator&gt;&amp;&amp; callbackAggregator, Vector&lt;PluginModuleInfo&gt;&amp;&amp; plugins, Vector&lt;String&gt;&amp;&amp; hostNames)
+                : m_callbackAggregator(WTF::move(callbackAggregator))
+                , m_plugins(WTF::move(plugins))
+                , m_hostNames(WTF::move(hostNames))
+            {
+                m_callbackAggregator-&gt;addPendingCallback();
+
+                deleteWebsiteDataForNextPlugin();
+            }
+
+            ~State()
+            {
+                ASSERT(m_plugins.isEmpty());
+            }
+
+            void deleteWebsiteDataForNextPlugin()
+            {
+                if (m_plugins.isEmpty()) {
+                    m_callbackAggregator-&gt;removePendingCallback();
+
+                    delete this;
+                    return;
+                }
+
+                auto plugin = m_plugins.takeLast();
+                PluginProcessManager::singleton().deleteWebsiteDataForHostNames(plugin, m_hostNames, [this] {
+                    deleteWebsiteDataForNextPlugin();
+                });
+            }
+
+            Ref&lt;CallbackAggregator&gt; m_callbackAggregator;
+            Vector&lt;PluginModuleInfo&gt; m_plugins;
+            Vector&lt;String&gt; m_hostNames;
+        };
+
+        State::deleteData(*callbackAggregator, plugins(), WTF::move(hostNames));
+    }
+#endif
+
</ins><span class="cx">     // There's a chance that we don't have any pending callbacks. If so, we want to dispatch the completion handler right away.
</span><span class="cx">     callbackAggregator-&gt;callIfNeeded();
</span><span class="cx"> }
</span></span></pre>
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