Hide location bar on WebKit programmatic scroll.

cc/thread_proxy.h

Index: cc/thread_proxy.h
diff --git a/cc/thread_proxy.h b/cc/thread_proxy.h
index 9223933bd9f36f7ccac21188b2ef913fd6e560f5..cf3be01db9a0f3caf1a63bfa92e9a67d0f335e52 100644
--- a/cc/thread_proxy.h
+++ b/cc/thread_proxy.h
@@ -33,6 +33,7 @@ public:
     // Proxy implementation
     virtual bool compositeAndReadback(void *pixels, const gfx::Rect&) OVERRIDE;
     virtual void startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
+    virtual void programmaticScroll(gfx::Vector2d targetOffset) OVERRIDE;
     virtual void finishAllRendering() OVERRIDE;
     virtual bool isStarted() const OVERRIDE;
     virtual bool initializeOutputSurface() OVERRIDE;
@@ -126,6 +127,8 @@ private:
     void beginFrameAbortedOnImplThread();
     void requestReadbackOnImplThread(ReadbackRequest*);
     void requestStartPageScaleAnimationOnImplThread(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration);
+    void requestProgrammaticScroll(gfx::Vector2d targetOffset);
+
     void finishAllRenderingOnImplThread(CompletionEvent*);
     void initializeImplOnImplThread(CompletionEvent*, InputHandler*);
     void setSurfaceReadyOnImplThread();