2011-03-26 Anders Carlsson <andersca@apple.com>

        Reviewed by Sam Weinig.

        Graphic corruption appeared with Silverlight contents while resizing window
        https://bugs.webkit.org/show_bug.cgi?id=57167
        <rdar://problem/9094052>

        Pass DispatchMessageEvenWhenWaitingForSyncReply when sending GeometryDidChange messages since that will guarantee
        that those messages will be handled before PaintEntirePlugin messages which prevents the PaintEntirePlugin handler from
        painting into the wrong backing store.

        * WebProcess/Plugins/PluginProxy.cpp:
        (WebKit::PluginProxy::geometryDidChange):


git-svn-id: svn://svn.chromium.org/blink/trunk@82048 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/WebKit2/ChangeLog

+2011-03-26  Anders Carlsson  <andersca@apple.com>
+
+        Reviewed by Sam Weinig.
+
+        Graphic corruption appeared with Silverlight contents while resizing window
+        https://bugs.webkit.org/show_bug.cgi?id=57167
+        <rdar://problem/9094052>
+
+        Pass DispatchMessageEvenWhenWaitingForSyncReply when sending GeometryDidChange messages since that will guarantee
+        that those messages will be handled before PaintEntirePlugin messages which prevents the PaintEntirePlugin handler from
+        painting into the wrong backing store.
+
+        * WebProcess/Plugins/PluginProxy.cpp:
+        (WebKit::PluginProxy::geometryDidChange):
+
 2011-03-26  Sam Weinig  <sam@webkit.org>
 
         Reviewed by Anders Carlsson.

third_party/WebKit/Source/WebKit2/WebProcess/Plugins/PluginProxy.cpp

@@ -176,7 +176,7 @@ void PluginProxy::geometryDidChange(const IntRect& frameRect, const IntRect& cli
 
     if (!needsBackingStore()) {
         SharedMemory::Handle pluginBackingStoreHandle;
-        m_connection->connection()->send(Messages::PluginControllerProxy::GeometryDidChange(frameRect, clipRect, pluginBackingStoreHandle), m_pluginInstanceID);
+        m_connection->connection()->send(Messages::PluginControllerProxy::GeometryDidChange(frameRect, clipRect, pluginBackingStoreHandle), m_pluginInstanceID, CoreIPC::DispatchMessageEvenWhenWaitingForSyncReply);
         return;
     }
 
@@ -202,14 +202,14 @@ void PluginProxy::geometryDidChange(const IntRect& frameRect, const IntRect& cli
 
         // Create a handle to the plug-in backing store so we can send it over.
         if (!m_pluginBackingStore->createHandle(pluginBackingStoreHandle)) {
-            m_pluginBackingStore.clear();
+            m_pluginBackingStore = nullptr;
             return;
         }
 
         m_pluginBackingStoreContainsValidData = false;
     }
 
-    m_connection->connection()->send(Messages::PluginControllerProxy::GeometryDidChange(frameRect, clipRect, pluginBackingStoreHandle), m_pluginInstanceID);
+    m_connection->connection()->send(Messages::PluginControllerProxy::GeometryDidChange(frameRect, clipRect, pluginBackingStoreHandle), m_pluginInstanceID, CoreIPC::DispatchMessageEvenWhenWaitingForSyncReply);
 }
 
 void PluginProxy::frameDidFinishLoading(uint64_t requestID)