cros: Bind hangup red button on remote controller to close web dialog

ui/web_dialogs/web_dialog_delegate.h

 // Copyright (c) 2012 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 UI_WEB_DIALOGS_WEB_DIALOG_DELEGATE_H_
 #define UI_WEB_DIALOGS_WEB_DIALOG_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 13 matching lines @@
 struct ContextMenuParams;
 struct OpenURLParams;
 }
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace ui {
+class Accelerator;
 
 // Implement this class to receive notifications.
 class WEB_DIALOGS_EXPORT WebDialogDelegate {
  public:
   // Returns true if the contents needs to be run in a modal dialog.
   virtual ModalType GetDialogModalType() const = 0;
 
   // Returns the title of the dialog.
   virtual base::string16 GetDialogTitle() const = 0;
 
@@ skipping 86 matching lines @@
                                     const gfx::Rect& initial_rect,
                                     bool user_gesture);
 
   // A callback to control whether a WebContents will be created. Returns
   // false to disallow the creation. Return true to use the default handler.
   virtual bool HandleShouldCreateWebContents();
 
   // Stores the dialog bounds.
   virtual void StoreDialogSize(const gfx::Size& dialog_size) {}
 
+  // Returns the accelerators handled by the delegate.
+  virtual std::vector<Accelerator> GetAccelerators();
+
+  // Returns true if |accelerator| is processed, otherwise false.
+  virtual bool AcceleratorPressed(const Accelerator& accelerator);
+
   virtual ~WebDialogDelegate() {}
 };
 
 }  // namespace ui
 
 #endif  // UI_WEB_DIALOGS_WEB_DIALOG_DELEGATE_H_