First Implementation of Snapped Points

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 4e68a3d86e0749481d2cd9c0b5ec019efd253802..5acc14e5fc356ab4603c08350e0d010054f9160a 100644
--- a/cc/input/input_handler.h
+++ b/cc/input/input_handler.h
@@ -154,6 +154,11 @@ class CC_EXPORT InputHandler {
   // ScrollBegin() returned SCROLL_STARTED.
   virtual InputHandlerScrollResult ScrollBy(ScrollState* scroll_state) = 0;
 
+  virtual void SnapAfterGestureScroll(const gfx::Point&) = 0;
+
+  virtual void FindSnappedOffset(gfx::Vector2dF* snapped_offset,
+                                 const gfx::Vector2dF& original_offset) = 0;
+
   // Returns SCROLL_STARTED if a layer was actively being scrolled,
   // SCROLL_IGNORED if not.
   virtual ScrollStatus FlingScrollBegin() = 0;