Support targeting for gestures in ViewTargeter

ui/views/view_targeter.h

Index: ui/views/view_targeter.h
diff --git a/ui/views/view_targeter.h b/ui/views/view_targeter.h
index ee4e7c3dcf1c6beddfca8cfa82aeaafa6975f4a3..3dca822a714e1578b7db12d2b0aaab5342ca2a28 100644
--- a/ui/views/view_targeter.h
+++ b/ui/views/view_targeter.h
@@ -26,12 +26,16 @@ class VIEWS_EXPORT ViewTargeter : public ui::EventTargeter {
   // A call-through to TargetForRect() on |delegate_|.
   View* TargetForRect(View* root, const gfx::Rect& rect) const;
 
- protected:
   // ui::EventTargeter:
+  // TODO(tdanderson): Make these private once RootView::DispatchGestureEvent()
+  //                   has been removed.
   virtual ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
                                               ui::Event* event) OVERRIDE;
   virtual ui::EventTarget* FindNextBestTarget(ui::EventTarget* previous_target,
                                               ui::Event* event) OVERRIDE;
+
+ protected:
+  // ui::EventTargeter:
   virtual bool SubtreeCanAcceptEvent(
       ui::EventTarget* target,
       const ui::LocatedEvent& event) const OVERRIDE;
@@ -42,6 +46,7 @@ class VIEWS_EXPORT ViewTargeter : public ui::EventTargeter {
  private:
   View* FindTargetForKeyEvent(View* root, const ui::KeyEvent& key);
   View* FindTargetForScrollEvent(View* root, const ui::ScrollEvent& scroll);
+  View* FindTargetForGestureEvent(View* root, const ui::GestureEvent& gesture);
 
   // ViewTargeter does not own the |delegate_|, but |delegate_| must
   // outlive the targeter.