[Win] Redesign the avatar bubble UI

ui/views/controls/textfield/textfield.h

Index: ui/views/controls/textfield/textfield.h
diff --git a/ui/views/controls/textfield/textfield.h b/ui/views/controls/textfield/textfield.h
index 2bfb6a7323bf658e1287783dfeb8aefd8a0442b8..4eeeaf294d51ce9b8fc7d81265f3972ac6b87749 100644
--- a/ui/views/controls/textfield/textfield.h
+++ b/ui/views/controls/textfield/textfield.h
@@ -131,6 +131,11 @@ class VIEWS_EXPORT Textfield : public View,
     placeholder_text_color_ = color;
   }
 
+  // Get or set the horizontal alignment used for the button from the underlying
+  // RenderText object.
+  gfx::HorizontalAlignment GetHorizontalAlignment() const;
+  void SetHorizontalAlignment(gfx::HorizontalAlignment alignment);
+
   // Displays a virtual keyboard or alternate input view if enabled.
   void ShowImeIfNeeded();