Fix alignment of avatar bubbles in the NTP

ui/views/bubble/bubble_delegate.h

Index: ui/views/bubble/bubble_delegate.h
diff --git a/ui/views/bubble/bubble_delegate.h b/ui/views/bubble/bubble_delegate.h
index 0e7da9ba627f7395f0118a24f5fd69c03539ac32..5d19b46225e0c8b0f9eb8d60ff1b7263ae042886 100644
--- a/ui/views/bubble/bubble_delegate.h
+++ b/ui/views/bubble/bubble_delegate.h
@@ -67,8 +67,8 @@ class VIEWS_EXPORT BubbleDelegateView : public WidgetDelegateView,
     use_focusless_ = use_focusless;
   }
 
-  // Get the arrow's anchor point in screen space.
-  virtual gfx::Point GetAnchorPoint();
+  // Get the arrow's anchor rect in screen space.
+  virtual gfx::Rect GetAnchorRect();
 
   // Get the arrow's location on the bubble.
   virtual BubbleBorder::ArrowLocation GetArrowLocation() const;
@@ -87,6 +87,9 @@ class VIEWS_EXPORT BubbleDelegateView : public WidgetDelegateView,
   // bubble to the setting before StartFade() was called.
   void ResetFade();
 
+  // Sets the bubble alignment relative to the anchor.
+  void SetAlignment(BubbleBorder::BubbleAlignment alignment);
+
   // The default bubble background color.
   static const SkColor kBackgroundColor;