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

ash/frame/header_painter_util.h

Index: ash/frame/header_painter_util.h
diff --git a/ash/frame/header_painter_util.h b/ash/frame/header_painter_util.h
index 5e4bde42506d0368061f4c80a80549711913533f..45b9936effff35ec83cd86ccfe5d01b660608aec 100644
--- a/ash/frame/header_painter_util.h
+++ b/ash/frame/header_painter_util.h
@@ -37,11 +37,11 @@ class ASH_EXPORT HeaderPainterUtil {
   // the window.
   static int GetThemeBackgroundXInset();
 
-  // Returns the bounds for the header's title given the header icon, the
-  // caption button container and the font used.
-  // |icon| should be NULL if the header does not use an icon.
-  static gfx::Rect GetTitleBounds(const views::View* icon,
-                                  const views::View* caption_button_container,
+  // Returns the bounds for the header's title given the views to the left and
+  // right of the title, and the font used.
+  // |left_view| should be NULL if there is no view to the left of the title.
+  static gfx::Rect GetTitleBounds(const views::View* left_view,
+                                  const views::View* right_view,
                                   const gfx::FontList& title_font_list);
 
   // Returns true if the header for |widget| can animate to new visuals when the