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..e1b828bcfe60ba2ad46cf12cf72557d316621b25 100644
--- a/third_party/WebKit/public/web/WebWidget.h
+++ b/third_party/WebKit/public/web/WebWidget.h
@@ -1,4 +1,3 @@
-
 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ -45,6 +44,8 @@
 #include "WebTextDirection.h"
 #include "WebTextInputInfo.h"
 
+#include <map>
+
 namespace blink {
 
 class WebCompositeAndReadbackAsyncCallback;
@@ -52,6 +53,7 @@ class WebInputEvent;
 class WebLayoutAndPaintAsyncCallback;
 class WebPagePopup;
 class WebString;
+struct WebCompositorMutations;
 struct WebPoint;
 template <typename T> class WebVector;
 
@@ -148,6 +150,13 @@ 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 WebCompositorMutations&) {}
+
+    // 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() { }