Start using the controller in app's view.

extensions/shell/browser/shell_native_app_window.h

 // Copyright 2014 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 EXTENSIONS_SHELL_BROWSER_SHELL_NATIVE_APP_WINDOW_H_
 #define EXTENSIONS_SHELL_BROWSER_SHELL_NATIVE_APP_WINDOW_H_
 
 #include "extensions/browser/app_window/app_window.h"
 #include "extensions/browser/app_window/native_app_window.h"
 
@@ skipping 36 matching lines @@
   void SetFullscreen(int fullscreen_types) override;
   bool IsFullscreenOrPending() const override;
   void UpdateWindowIcon() override;
   void UpdateWindowTitle() override;
   void UpdateBadgeIcon() override;
   void UpdateDraggableRegions(
       const std::vector<DraggableRegion>& regions) override;
   SkRegion* GetDraggableRegion() override;
   void UpdateShape(scoped_ptr<SkRegion> region) override;
   void SetInterceptAllKeys(bool want_all_keys) override;
+  bool PreHandleKeyboardEvent(content::WebContents* source,
+                              const content::NativeWebKeyboardEvent& event,
+                              bool* is_keyboard_shortcut) override;
   void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) override;
   bool IsFrameless() const override;
   bool HasFrameColor() const override;
   SkColor ActiveFrameColor() const override;
   SkColor InactiveFrameColor() const override;
   gfx::Insets GetFrameInsets() const override;
   void ShowWithApp() override;
   void HideWithApp() override;
   void UpdateShelfMenu() override;
   gfx::Size GetContentMinimumSize() const override;
   gfx::Size GetContentMaximumSize() const override;
   void SetContentSizeConstraints(const gfx::Size& min_size,
                                  const gfx::Size& max_size) override;
   void SetVisibleOnAllWorkspaces(bool always_visible) override;
   bool CanHaveAlphaEnabled() const override;
 
  private:
   AppWindow* app_window_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellNativeAppWindow);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_SHELL_BROWSER_SHELL_NATIVE_APP_WINDOW_H_