Show avatar icon on V2 app's frame

ash/frame/header_painter.h

Index: ash/frame/header_painter.h
diff --git a/ash/frame/header_painter.h b/ash/frame/header_painter.h
index 520758310d50c8b7b6a68342521dbedaaae0e5cd..6649d151c454a0af16d8ad8dca211ee30519a3e5 100644
--- a/ash/frame/header_painter.h
+++ b/ash/frame/header_painter.h
@@ -56,6 +56,9 @@ class ASH_EXPORT HeaderPainter : public gfx::AnimationDelegate {
             views::View* window_icon,
             FrameCaptionButtonContainerView* caption_button_container);
 
+  // Sets the avatar icon to the header. Passing NULL removes the avatar icon.
+  void UpdateAvatarIcon(views::View* avatar_icon);
+
   // Returns the bounds of the client view for a window with |header_height|
   // and |window_bounds|. The return value and |window_bounds| are in the
   // views::NonClientView's coordinates.
@@ -143,6 +146,9 @@ class ASH_EXPORT HeaderPainter : public gfx::AnimationDelegate {
   // Returns the offset between window left edge and title string.
   int GetTitleOffsetX() const;
 
+  // Returns the offset between window left edge and the window icon.
+  int GetWindowIconOffsetX() const;
+
   // Returns the vertical center of the caption button container in window
   // coordinates.
   int GetCaptionButtonContainerCenterY() const;
@@ -160,6 +166,7 @@ class ASH_EXPORT HeaderPainter : public gfx::AnimationDelegate {
   views::Widget* frame_;
   views::View* header_view_;
   views::View* window_icon_;  // May be NULL.
+  views::View* avatar_icon_;  // May be NULL.
   FrameCaptionButtonContainerView* caption_button_container_;
 
   // The height of the header.