Delete a bunch of noop paint invalidation code.

sky/engine/platform/graphics/Canvas2DLayerBridge.h

 /*
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 48 matching lines @@
     virtual bool prepareMailbox(WebExternalTextureMailbox*, WebExternalBitmap*) override;
     virtual void mailboxReleased(const WebExternalTextureMailbox&, bool lostResource) override;
 
     // SkDeferredCanvas::NotificationClient implementation
     virtual void prepareForDraw() override;
     virtual void storageAllocatedForRecordingChanged(size_t) override;
     virtual void flushedDrawCommands() override;
     virtual void skippedPendingDrawCommands() override;
 
     // ImageBufferSurface implementation
-    void finalizeFrame(const FloatRect &dirtyRect);
+    void finalizeFrame();
     void willAccessPixels();
     SkCanvas* canvas() const { return m_canvas.get(); }
     bool checkSurfaceValid();
     bool restoreSurface();
     WebLayer* layer() const;
     Platform3DObject getBackingTexture();
     bool isAccelerated() const { return true; }
     void setIsHidden(bool);
     void setImageBuffer(ImageBuffer* imageBuffer) { m_imageBuffer = imageBuffer; }
 
@@ skipping 56 matching lines @@
     MailboxInfo* releasedMailboxInfo();
 
     uint32_t m_lastImageId;
     Vector<MailboxInfo> m_mailboxes;
     int m_releasedMailboxInfoIndex;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_PLATFORM_GRAPHICS_CANVAS2DLAYERBRIDGE_H_