Fix alignment of avatar bubbles in the NTP

ui/views/bubble/bubble_frame_view.h

Index: ui/views/bubble/bubble_frame_view.h
diff --git a/ui/views/bubble/bubble_frame_view.h b/ui/views/bubble/bubble_frame_view.h
index 47861eb9a10187c05dddd50e63d9a40f2df9536f..5a8661d3f7e6e4fd3a6308b7cd2119d61ecd0f1a 100644
--- a/ui/views/bubble/bubble_frame_view.h
+++ b/ui/views/bubble/bubble_frame_view.h
@@ -41,6 +41,10 @@ class VIEWS_EXPORT BubbleFrameView : public NonClientFrameView {
   // Accessor for bubble border inside border contents.
   BubbleBorder* bubble_border() const;
 
+  gfx::Rect GetWindowBoundsForAnchorAndClientSize(
+      const gfx::Rect& anchor,
+      const gfx::Size& client_size) const;
+
  private:
   FRIEND_TEST_ALL_PREFIXES(BubbleFrameViewBasicTest, GetBoundsForClientView);