WIP - compositor worker mega patch.

third_party/WebKit/public/web/WebWidget.h

Index: third_party/WebKit/public/web/WebWidget.h
diff --git a/third_party/WebKit/public/web/WebWidget.h b/third_party/WebKit/public/web/WebWidget.h
index ceb006fab242ba7440712515e0060f2649f0d4de..82817bfd8379ecde5eda65a3c7db78cb9f176f09 100644
--- a/third_party/WebKit/public/web/WebWidget.h
+++ b/third_party/WebKit/public/web/WebWidget.h
@@ -37,6 +37,7 @@
 #include "../platform/WebFloatSize.h"
 #include "../platform/WebFrameTimingEvent.h"
 #include "../platform/WebInputEventResult.h"
+#include "../platform/WebMutation.h"
 #include "../platform/WebPoint.h"
 #include "../platform/WebRect.h"
 #include "../platform/WebSize.h"
@@ -45,6 +46,8 @@
 #include "WebTextDirection.h"
 #include "WebTextInputInfo.h"
 
+#include <map>
+
 namespace blink {
 
 class WebCompositeAndReadbackAsyncCallback;
@@ -148,6 +151,13 @@ public:
     };
     virtual void recordFrameTimingEvent(FrameTimingEventType eventType, int64_t RectId, const WebVector<WebFrameTimingEvent>& events) { }
 
+    // Called to notify the WebWidget about the mutations made to the elements from a compositor worker.
+    virtual void applyMutations(const WebMutationMap& mutations) {}
+
+    // Called to notify the WebWidget that a commit has completed so that post
+    // commit work can be initiated.
+    virtual void didCommit() { }
+
     // Called to inform the WebWidget that mouse capture was lost.
     virtual void mouseCaptureLost() { }