[Android] Add support for a hung renderer dialog

components/infobars/core/infobar_delegate.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 COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_
 #define COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "ui/base/window_open_disposition.h"
 
 class ConfirmInfoBarDelegate;
+class HungRendererInfoBarDelegate;
 class InsecureContentInfoBarDelegate;
 class MediaStreamInfoBarDelegate;
 class NativeAppInfoBarDelegate;
 class PermissionInfobarDelegate;
 class PopupBlockedInfoBarDelegate;
 class RegisterProtocolHandlerInfoBarDelegate;
 class ScreenCaptureInfoBarDelegate;
 class ThemeInstalledInfoBarDelegate;
 class ThreeDAPIInfoBarDelegate;
 
@@ skipping 87 matching lines @@
   // page (not including reloads).  Subclasses wishing to change this behavior
   // can override either this function or ShouldExpireInternal(), depending on
   // what level of control they need.
   virtual bool ShouldExpire(const NavigationDetails& details) const;
 
   // Called when the user clicks on the close button to dismiss the infobar.
   virtual void InfoBarDismissed();
 
   // Type-checking downcast routines:
   virtual ConfirmInfoBarDelegate* AsConfirmInfoBarDelegate();
+  virtual HungRendererInfoBarDelegate* AsHungRendererInfoBarDelegate();
   virtual InsecureContentInfoBarDelegate* AsInsecureContentInfoBarDelegate();
   virtual MediaStreamInfoBarDelegate* AsMediaStreamInfoBarDelegate();
   virtual NativeAppInfoBarDelegate* AsNativeAppInfoBarDelegate();
   virtual PermissionInfobarDelegate* AsPermissionInfobarDelegate();
   virtual PopupBlockedInfoBarDelegate* AsPopupBlockedInfoBarDelegate();
   virtual RegisterProtocolHandlerInfoBarDelegate*
       AsRegisterProtocolHandlerInfoBarDelegate();
   virtual ScreenCaptureInfoBarDelegate* AsScreenCaptureInfoBarDelegate();
   virtual ThemeInstalledInfoBarDelegate* AsThemePreviewInfobarDelegate();
   virtual ThreeDAPIInfoBarDelegate* AsThreeDAPIInfoBarDelegate();
@@ skipping 13 matching lines @@
 
   // The ID of the active navigation entry at the time we became owned.
   int nav_entry_id_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarDelegate);
 };
 
 }  // namespace infobars
 
 #endif  // COMPONENTS_INFOBARS_CORE_INFOBAR_DELEGATE_H_