Hack webapp to request keyboard events on connection.

extensions/browser/app_window/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_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_
 #define EXTENSIONS_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/base_window.h"
 #include "ui/gfx/geometry/insets.h"
 
 namespace content {
 struct NativeWebKeyboardEvent;
+class WebContents;
 }
 
 namespace extensions {
 
 struct DraggableRegion;
 
 // This is an interface to a native implementation of a app window, used for
 // new-style packaged apps. App windows contain a web contents, but no tabs
 // or URL bar.
 class NativeAppWindow : public ui::BaseWindow,
@@ skipping 23 matching lines @@
   virtual SkRegion* GetDraggableRegion() = 0;
 
   // Called when the window shape is changed. If |region| is NULL then the
   // window is restored to the default shape.
   virtual void UpdateShape(scoped_ptr<SkRegion> region) = 0;
 
   // Set whether the window should receive all keyboard events including task
   // switching keys.
   virtual void SetInterceptAllKeys(bool want_all_keys) = 0;
 
+  // Handle key before content receives it.
+  virtual bool PreHandleKeyboardEvent(
+      content::WebContents* source,
+      const content::NativeWebKeyboardEvent& event,
+      bool* is_keyboard_shortcut) = 0;
+
   // Allows the window to handle unhandled keyboard messages coming back from
   // the renderer.
   virtual void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) = 0;
 
   // Returns true if the window has no frame, as for a window opened by
   // chrome.app.window.create with the option 'frame' set to 'none'.
   virtual bool IsFrameless() const = 0;
 
   // Returns information about the window's frame.
@@ skipping 31 matching lines @@
   // Returns false if the underlying native window ignores alpha transparency
   // when compositing.
   virtual bool CanHaveAlphaEnabled() const = 0;
 
   ~NativeAppWindow() override {}
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_APP_WINDOW_NATIVE_APP_WINDOW_H_