Introduce new WebApp header style for hosted apps and fizzy apps on ash.

ash/frame/header_painter.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_FRAME_HEADER_PAINTER_H_
 #define ASH_FRAME_HEADER_PAINTER_H_
 
 #include "ash/ash_export.h"
 
 namespace gfx {
@@ skipping 22 matching lines @@
   // Performs layout for the header.
   virtual void LayoutHeader() = 0;
 
   // Gets / sets how much of the header is painted. This allows the tabstrip to
   // affect the header height. This height does not affect LayoutHeader().
   virtual int GetHeaderHeightForPainting() const = 0;
   virtual void SetHeaderHeightForPainting(int height_for_painting) = 0;
 
   // Schedule a re-paint of the entire title.
   virtual void SchedulePaintForTitle() = 0;
+
+  // Updates the x inset of the leftmost view in the header.
+  virtual void UpdateLeftViewXInset(int left_view_x_inset) = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_FRAME_HEADER_PAINTER_H_