views: Extract TabIconViewModel into its own header file.

chrome/browser/ui/views/frame/app_panel_browser_frame_view.h

Index: chrome/browser/ui/views/frame/app_panel_browser_frame_view.h
diff --git a/chrome/browser/ui/views/frame/app_panel_browser_frame_view.h b/chrome/browser/ui/views/frame/app_panel_browser_frame_view.h
index ef83960bbb5fb38a2f3b1024f9fd80e7186c49f5..3aca67b4a3b630d4b16ab26718c12da6da46b49a 100644
--- a/chrome/browser/ui/views/frame/app_panel_browser_frame_view.h
+++ b/chrome/browser/ui/views/frame/app_panel_browser_frame_view.h
@@ -6,21 +6,23 @@
 #define CHROME_BROWSER_UI_VIEWS_FRAME_APP_PANEL_BROWSER_FRAME_VIEW_H_
 
 #include "chrome/browser/ui/views/frame/browser_non_client_frame_view.h"
-#include "chrome/browser/ui/views/tab_icon_view.h"
+#include "chrome/browser/ui/views/tab_icon_view_model.h"
 #include "ui/views/controls/button/button.h"
 
 class BrowserFrame;
 class BrowserView;
+class TabIconView;
 
 namespace views {
 class ImageButton;
 }
+
 // The frame view which is used for Application Panels.
 // TODO(rafaelw): Refactor. This shares much duplicated code with
 // OpaqueBrowserFrameView.
 class AppPanelBrowserFrameView : public BrowserNonClientFrameView,
                                  public views::ButtonListener,
-                                 public TabIconView::TabIconViewModel {
+                                 public chrome::TabIconViewModel {
  public:
   // Constructs a non-client view for an BrowserFrame.
   AppPanelBrowserFrameView(BrowserFrame* frame, BrowserView* browser_view);
@@ -51,7 +53,7 @@ class AppPanelBrowserFrameView : public BrowserNonClientFrameView,
   virtual void ButtonPressed(views::Button* sender, const views::Event& event)
       OVERRIDE;
 
-  // Overridden from TabIconView::TabIconViewModel:
+  // Overridden from chrome::TabIconViewModel:
   virtual bool ShouldTabIconViewAnimate() const OVERRIDE;
   virtual gfx::ImageSkia GetFaviconForTabIconView() OVERRIDE;