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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/185439">185439</a></dd>
<dt>Author</dt> <dd>andersca@apple.com</dd>
<dt>Date</dt> <dd>2015-06-10 17:27:39 -0700 (Wed, 10 Jun 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>WKWebsiteDataStore should handle removing plug-in data
https://bugs.webkit.org/show_bug.cgi?id=145862

Reviewed by Sam Weinig.

* PluginProcess/PluginProcess.cpp:
(WebKit::PluginProcess::deleteWebsiteData):
* PluginProcess/PluginProcess.h:
* PluginProcess/PluginProcess.messages.in:
* UIProcess/Plugins/PluginProcessManager.cpp:
(WebKit::PluginProcessManager::deleteWebsiteData):
* UIProcess/Plugins/PluginProcessManager.h:
* UIProcess/Plugins/PluginProcessProxy.cpp:
(WebKit::PluginProcessProxy::~PluginProcessProxy):
(WebKit::PluginProcessProxy::deleteWebsiteData):
(WebKit::PluginProcessProxy::pluginProcessCrashedOrFailedToLaunch):
(WebKit::PluginProcessProxy::didFinishLaunching):
(WebKit::PluginProcessProxy::didDeleteWebsiteData):
* 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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/ChangeLog        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -1,3 +1,28 @@
</span><ins>+2015-06-10  Anders Carlsson  &lt;andersca@apple.com&gt;
+
+        WKWebsiteDataStore should handle removing plug-in data
+        https://bugs.webkit.org/show_bug.cgi?id=145862
+
+        Reviewed by Sam Weinig.
+
+        * PluginProcess/PluginProcess.cpp:
+        (WebKit::PluginProcess::deleteWebsiteData):
+        * PluginProcess/PluginProcess.h:
+        * PluginProcess/PluginProcess.messages.in:
+        * UIProcess/Plugins/PluginProcessManager.cpp:
+        (WebKit::PluginProcessManager::deleteWebsiteData):
+        * UIProcess/Plugins/PluginProcessManager.h:
+        * UIProcess/Plugins/PluginProcessProxy.cpp:
+        (WebKit::PluginProcessProxy::~PluginProcessProxy):
+        (WebKit::PluginProcessProxy::deleteWebsiteData):
+        (WebKit::PluginProcessProxy::pluginProcessCrashedOrFailedToLaunch):
+        (WebKit::PluginProcessProxy::didFinishLaunching):
+        (WebKit::PluginProcessProxy::didDeleteWebsiteData):
+        * UIProcess/Plugins/PluginProcessProxy.h:
+        * UIProcess/Plugins/PluginProcessProxy.messages.in:
+        * UIProcess/WebsiteData/WebsiteDataStore.cpp:
+        (WebKit::WebsiteDataStore::removeData):
+
</ins><span class="cx"> 2015-06-10  Brent Fulgham  &lt;bfulgham@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [WK2] Do not indicate Media Keys are present when they are not
</span></span></pre></div>
<a id="trunkSourceWebKit2PluginProcessPluginProcesscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.cpp        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -214,6 +214,21 @@
</span><span class="cx">     parentProcessConnection()-&gt;send(Messages::PluginProcessProxy::DidClearSiteData(callbackID), 0);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcess::deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, uint64_t callbackID)
+{
+    if (auto* module = netscapePluginModule()) {
+        auto currentTime = std::chrono::system_clock::now();
+
+        if (currentTime &gt; modifiedSince) {
+            uint64_t maximumAge = std::chrono::duration_cast&lt;std::chrono::seconds&gt;(currentTime - modifiedSince).count();
+
+            module-&gt;clearSiteData(String(), NP_CLEAR_ALL, maximumAge);
+        }
+    }
+
+    parentProcessConnection()-&gt;send(Messages::PluginProcessProxy::DidDeleteWebsiteData(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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.h        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.h        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -98,9 +98,11 @@
</span><span class="cx">     void didReceivePluginProcessMessage(IPC::Connection&amp;, IPC::MessageDecoder&amp;);
</span><span class="cx">     void initializePluginProcess(PluginProcessCreationParameters&amp;&amp;);
</span><span class="cx">     void createWebProcessConnection();
</span><ins>+
</ins><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><del>-    
</del><ins>+    void deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, uint64_t callbackID);
+
</ins><span class="cx">     // AudioHardwareListenerClient
</span><span class="cx">     virtual void audioHardwareDidBecomeActive() override;
</span><span class="cx">     virtual void audioHardwareDidBecomeInactive() override;
</span></span></pre></div>
<a id="trunkSourceWebKit2PluginProcessPluginProcessmessagesin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/PluginProcess/PluginProcess.messages.in        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -39,6 +39,8 @@
</span><span class="cx">     # a DidClearSiteData message when done.
</span><span class="cx">     ClearSiteData(Vector&lt;String&gt; sites, uint64_t flags, uint64_t maxAgeInSeconds, uint64_t callbackID)
</span><span class="cx"> 
</span><ins>+    DeleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, uint64_t callbackID)
+
</ins><span class="cx">     SetProcessSuppressionEnabled(bool flag)
</span><span class="cx"> #if PLATFORM(COCOA)
</span><span class="cx">     SetQOS(int latencyQOS, int throughputQOS)
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessPluginsPluginProcessManagercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.cpp        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -102,6 +102,13 @@
</span><span class="cx">     pluginProcess-&gt;fetchWebsiteData(WTF::move(completionHandler));
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessManager::deleteWebsiteData(const PluginModuleInfo&amp; plugin, std::chrono::system_clock::time_point modifiedSince, std::function&lt;void ()&gt; completionHandler)
+{
+    PluginProcessProxy* pluginProcess = getOrCreatePluginProcess(pluginProcessToken(plugin, PluginProcessTypeNormal, PluginProcessSandboxPolicyNormal));
+
+    pluginProcess-&gt;deleteWebsiteData(modifiedSince, 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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessManager.h        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -63,6 +63,7 @@
</span><span class="cx">     void removePluginProcessProxy(PluginProcessProxy*);
</span><span class="cx"> 
</span><span class="cx">     void fetchWebsiteData(const PluginModuleInfo&amp;, std::function&lt;void (Vector&lt;String&gt;)&gt; completionHandler);
</span><ins>+    void deleteWebsiteData(const PluginModuleInfo&amp;, std::chrono::system_clock::time_point modifiedSince, 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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.cpp        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -79,6 +79,8 @@
</span><span class="cx"> {
</span><span class="cx">     ASSERT(m_pendingFetchWebsiteDataRequests.isEmpty());
</span><span class="cx">     ASSERT(m_pendingFetchWebsiteDataCallbacks.isEmpty());
</span><ins>+    ASSERT(m_pendingDeleteWebsiteDataRequests.isEmpty());
+    ASSERT(m_pendingDeleteWebsiteDataCallbacks.isEmpty());
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void PluginProcessProxy::getLaunchOptions(ProcessLauncher::LaunchOptions&amp; launchOptions)
</span><span class="lines">@@ -121,6 +123,19 @@
</span><span class="cx">     m_connection-&gt;send(Messages::PluginProcess::GetSitesWithData(callbackID), 0);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessProxy::deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, std::function&lt;void ()&gt; completionHandler)
+{
+    uint64_t callbackID = generateCallbackID();
+    m_pendingDeleteWebsiteDataCallbacks.set(callbackID, WTF::move(completionHandler));
+
+    if (state() == State::Launching) {
+        m_pendingDeleteWebsiteDataRequests.append({ modifiedSince, callbackID });
+        return;
+    }
+
+    m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteData(modifiedSince, 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">@@ -156,11 +171,15 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     m_pendingFetchWebsiteDataRequests.clear();
</span><del>-
</del><span class="cx">     for (const auto&amp; callback : m_pendingFetchWebsiteDataCallbacks.values())
</span><span class="cx">         callback({ });
</span><span class="cx">     m_pendingFetchWebsiteDataCallbacks.clear();
</span><span class="cx"> 
</span><ins>+    m_pendingDeleteWebsiteDataRequests.clear();
+    for (const auto&amp; callback : m_pendingDeleteWebsiteDataCallbacks.values())
+        callback();
+    m_pendingDeleteWebsiteDataRequests.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">@@ -228,6 +247,10 @@
</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><ins>+    for (auto&amp; deleteWebsiteDataRequest : m_pendingDeleteWebsiteDataRequests)
+        m_connection-&gt;send(Messages::PluginProcess::DeleteWebsiteData(deleteWebsiteDataRequest.modifiedSince, deleteWebsiteDataRequest.callbackID), 0);
+    m_pendingDeleteWebsiteDataRequests.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">@@ -275,6 +298,12 @@
</span><span class="cx">     webPluginSiteDataManager-&gt;didClearSiteDataForSinglePlugin(callbackID);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void PluginProcessProxy::didDeleteWebsiteData(uint64_t callbackID)
+{
+    auto callback = m_pendingDeleteWebsiteDataCallbacks.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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.h        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -80,6 +80,7 @@
</span><span class="cx">     void getPluginProcessConnection(PassRefPtr&lt;Messages::WebProcessProxy::GetPluginProcessConnection::DelayedReply&gt;);
</span><span class="cx"> 
</span><span class="cx">     void fetchWebsiteData(std::function&lt;void (Vector&lt;String&gt;)&gt; completionHandler);
</span><ins>+    void deleteWebsiteData(std::chrono::system_clock::time_point modifiedSince, 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">@@ -128,6 +129,7 @@
</span><span class="cx">     void didCreateWebProcessConnection(const IPC::Attachment&amp;, bool supportsAsynchronousPluginInitialization);
</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><ins>+    void didDeleteWebsiteData(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">@@ -166,6 +168,13 @@
</span><span class="cx">     Vector&lt;uint64_t&gt; m_pendingFetchWebsiteDataRequests;
</span><span class="cx">     HashMap&lt;uint64_t, std::function&lt;void (Vector&lt;String&gt;)&gt;&gt; m_pendingFetchWebsiteDataCallbacks;
</span><span class="cx"> 
</span><ins>+    struct DeleteWebsiteDataRequest {
+        std::chrono::system_clock::time_point modifiedSince;
+        uint64_t callbackID;
+    };
+    Vector&lt;DeleteWebsiteDataRequest&gt; m_pendingDeleteWebsiteDataRequests;
+    HashMap&lt;uint64_t, std::function&lt;void ()&gt;&gt; m_pendingDeleteWebsiteDataCallbacks;
+
</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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/Plugins/PluginProcessProxy.messages.in        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -27,6 +27,7 @@
</span><span class="cx"> 
</span><span class="cx">     DidGetSitesWithData(Vector&lt;String&gt; sites, uint64_t callbackID)
</span><span class="cx">     DidClearSiteData(uint64_t callbackID)
</span><ins>+    DidDeleteWebsiteData(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 (185438 => 185439)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp        2015-06-10 23:50:33 UTC (rev 185438)
+++ trunk/Source/WebKit2/UIProcess/WebsiteData/WebsiteDataStore.cpp        2015-06-11 00:27:39 UTC (rev 185439)
</span><span class="lines">@@ -621,6 +621,55 @@
</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()) {
+        class State {
+        public:
+            static void deleteData(Ref&lt;CallbackAggregator&gt;&amp;&amp; callbackAggregator, Vector&lt;PluginModuleInfo&gt;&amp;&amp; plugins, std::chrono::system_clock::time_point modifiedSince)
+            {
+                new State(WTF::move(callbackAggregator), WTF::move(plugins), modifiedSince);
+            }
+
+        private:
+            State(Ref&lt;CallbackAggregator&gt;&amp;&amp; callbackAggregator, Vector&lt;PluginModuleInfo&gt;&amp;&amp; plugins, std::chrono::system_clock::time_point modifiedSince)
+                : m_callbackAggregator(WTF::move(callbackAggregator))
+                , m_plugins(WTF::move(plugins))
+                , m_modifiedSince(modifiedSince)
+            {
+                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().deleteWebsiteData(plugin, m_modifiedSince, [this] {
+                    deleteWebsiteDataForNextPlugin();
+                });
+            }
+
+            Ref&lt;CallbackAggregator&gt; m_callbackAggregator;
+            Vector&lt;PluginModuleInfo&gt; m_plugins;
+            std::chrono::system_clock::time_point m_modifiedSince;
+        };
+
+        State::deleteData(*callbackAggregator, plugins(), modifiedSince);
+    }
+#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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