Show avatar icon on V2 app's frame

ash/frame/header_painter.cc

Index: ash/frame/header_painter.cc
diff --git a/ash/frame/header_painter.cc b/ash/frame/header_painter.cc
index 6e18d95de6b28edd8fc1af0d26b47e7da9e6e209..d0acfdda21ddb667fe7a3aeefeb6e844ecc13eb0 100644
--- a/ash/frame/header_painter.cc
+++ b/ash/frame/header_painter.cc
@@ -143,6 +143,7 @@ HeaderPainter::HeaderPainter()
     : frame_(NULL),
       header_view_(NULL),
       window_icon_(NULL),
+      window_icon_size_(kIconSize, kIconSize),
       caption_button_container_(NULL),
       header_height_(0),
       previous_theme_frame_id_(0),
@@ -170,6 +171,12 @@ void HeaderPainter::Init(
   caption_button_container_ = caption_button_container;
 }
 
+void HeaderPainter::UpdateWindowIcon(views::View* window_icon,
+                                     const gfx::Size& window_icon_size) {
+  window_icon_ = window_icon;
+  window_icon_size_ = window_icon_size;
+}
+
 // static
 gfx::Rect HeaderPainter::GetBoundsForClientView(
     int header_height,
@@ -368,7 +375,9 @@ void HeaderPainter::LayoutHeader() {
     // container.
     int icon_offset_y =
         GetCaptionButtonContainerCenterY() - window_icon_->height() / 2;
-    window_icon_->SetBounds(kIconOffsetX, icon_offset_y, kIconSize, kIconSize);
+    window_icon_->SetBounds(kIconOffsetX, icon_offset_y,
+                            window_icon_size_.width(),
+                            window_icon_size_.height());
   }
 }