Removed unused LayerTreeHostImpl::ScrollVerticallyByPage

cc/input/input_handler.h

Index: cc/input/input_handler.h
diff --git a/cc/input/input_handler.h b/cc/input/input_handler.h
index 8d0f0c49982fc87b4f3b8c784c3a3f98320eda78..5f1f343f55a23756180784789ffa0184dc6c56db 100644
--- a/cc/input/input_handler.h
+++ b/cc/input/input_handler.h
@@ -148,9 +148,6 @@ class CC_EXPORT InputHandler {
   // ScrollBegin() returned SCROLL_STARTED.
   virtual InputHandlerScrollResult ScrollBy(ScrollState* scroll_state) = 0;
 
-  virtual bool ScrollVerticallyByPage(const gfx::Point& viewport_point,
-                                      ScrollDirection direction) = 0;
-
   // Returns SCROLL_STARTED if a layer was actively being scrolled,
   // SCROLL_IGNORED if not.
   virtual ScrollStatus FlingScrollBegin() = 0;