Change default ink drop center points to center of contents bounds

ui/views/view.h

Index: ui/views/view.h
diff --git a/ui/views/view.h b/ui/views/view.h
index 9f1ca8b509665fda2a4b73d00ff2ffc2fc247acb..feb433c0f62ee8dd992e21eed5c9d21958b036e7 100644
--- a/ui/views/view.h
+++ b/ui/views/view.h
@@ -378,6 +378,10 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
   // implementation.
   int GetMirroredXForRect(const gfx::Rect& rect) const;
 
+  // Given a rectangle specified in this View's coordinate system, the function
+  // computes the mirrored rectangle.
+  gfx::Rect GetMirroredRect(const gfx::Rect& rect) const;
+
   // Given the X coordinate of a point inside the View, this function returns
   // the mirrored X coordinate of the point if the View's UI layout is
   // right-to-left. If the layout is left-to-right, the same X coordinate is