Let Chrome app handle Ash accelerators first if the app is launched as a window

chrome/browser/ui/views/ash/chrome_shell_delegate.h

Index: chrome/browser/ui/views/ash/chrome_shell_delegate.h
diff --git a/chrome/browser/ui/views/ash/chrome_shell_delegate.h b/chrome/browser/ui/views/ash/chrome_shell_delegate.h
index 7a71f49d21e7404820385817a0ac96e3f7cb2935..b614e96169c563ff51a53755a68d41359ec98f04 100644
--- a/chrome/browser/ui/views/ash/chrome_shell_delegate.h
+++ b/chrome/browser/ui/views/ash/chrome_shell_delegate.h
@@ -38,6 +38,7 @@ class ChromeShellDelegate : public ash::ShellDelegate,
   virtual void Shutdown() OVERRIDE;
   virtual void Exit() OVERRIDE;
   virtual void NewWindow(bool is_incognito) OVERRIDE;
+  virtual bool IsBrowserWindow(const aura::Window* window) OVERRIDE;
   virtual void Search() OVERRIDE;
   virtual void OpenFileManager() OVERRIDE;
   virtual void OpenCrosh() OVERRIDE;