[Slimming Paint] Paint the inspector overlay with GraphicsLayer DisplayList.

Source/web/WebDevToolsAgentImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #ifndef WebDevToolsAgentImpl_h
 #define WebDevToolsAgentImpl_h
 
 #include "core/inspector/InspectorClient.h"
 #include "core/inspector/InspectorFrontendChannel.h"
 
 #include "public/platform/WebSize.h"
 #include "public/platform/WebThread.h"
 #include "public/web/WebDevToolsAgent.h"
-#include "public/web/WebPageOverlay.h"
+#include "web/PageOverlay.h"
 #include "wtf/Forward.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
+class GraphicsContext;
 class LocalFrame;
 class InspectorClient;
 class InspectorController;
 class Page;
 class PlatformKeyboardEvent;
 class WebDevToolsAgentClient;
 class WebInputEvent;
 class WebLocalFrameImpl;
 class WebString;
 class WebViewImpl;
 
 class WebDevToolsAgentImpl final
     : public WebDevToolsAgent
     , public InspectorClient
     , public InspectorFrontendChannel
-    , public WebPageOverlay
+    , public PageOverlay::Painter
     , private WebThread::TaskObserver {
 public:
     WebDevToolsAgentImpl(WebViewImpl* webViewImpl, WebDevToolsAgentClient* client);
     virtual ~WebDevToolsAgentImpl();
 
     WebDevToolsAgentClient* client() { return m_client; }
 
     bool handleInputEvent(Page*, const WebInputEvent&);
 
     // WebDevToolsAgent implementation.
@@ skipping 25 matching lines @@
     virtual void setTouchEventEmulationEnabled(bool) override;
 
     virtual void setTraceEventCallback(const WTF::String& categoryFilter, TraceEventCallback) override;
     virtual void resetTraceEventCallback() override;
     virtual void enableTracing(const WTF::String& categoryFilter) override;
     virtual void disableTracing() override;
 
     virtual void dispatchKeyEvent(const PlatformKeyboardEvent&) override;
     virtual void dispatchMouseEvent(const PlatformMouseEvent&) override;
 
-    // WebPageOverlay
-    virtual void paintPageOverlay(WebCanvas*) override;
+    // PageOverlay::Painter implementation.
+    virtual void paintPageOverlay(GraphicsContext&) override;
 
     void flushPendingProtocolNotifications();
 
 private:
     // WebThread::TaskObserver
     virtual void willProcessTask() override;
     virtual void didProcessTask() override;
 
     void enableMobileEmulation();
     void disableMobileEmulation();
@@ skipping 20 matching lines @@
     OwnPtr<IntPoint> m_lastPinchAnchorDip;
 
     typedef Vector<RefPtr<JSONObject> > NotificationQueue;
     NotificationQueue m_notificationQueue;
     String m_stateCookie;
 };
 
 } // namespace blink
 
 #endif