Fix for 'Simple Adblock' extension crashes

content/browser/renderer_host/render_view_host_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 CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/process/kill.h"
 #include "base/strings/string16.h"
+#include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/common/content_export.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/public/common/page_transition_types.h"
 #include "net/base/load_states.h"
 #include "third_party/WebKit/public/web/WebPopupType.h"
 #include "ui/base/window_open_disposition.h"
 
 class GURL;
 class SkBitmap;
 struct ViewHostMsg_CreateWindow_Params;
@@ skipping 246 matching lines @@
   // calling |callback|.
   virtual void RequestMediaAccessPermission(
       const MediaStreamRequest& request,
       const MediaResponseCallback& callback) {}
 
   // Returns the SessionStorageNamespace the render view should use. Might
   // create the SessionStorageNamespace on the fly.
   virtual SessionStorageNamespace* GetSessionStorageNamespace(
       SiteInstance* instance);
 
+  // Returns a copy of the map of all session storage namespaces related
+  // to this view.
+  virtual SessionStorageNamespaceMap GetSessionStorageNamespaceMap();
+
   // Returns true if the RenderViewHost will never be visible.
   virtual bool IsNeverVisible();
 
   // Returns the FrameTree the render view should use. Guaranteed to be constant
   // for the lifetime of the render view.
   //
   // TODO(ajwong): Remove once the main frame RenderFrameHost is no longer
   // created by the RenderViewHost.
   virtual FrameTree* GetFrameTree();
 
   // Invoked when an accessibility event is received from the renderer.
   virtual void AccessibilityEventReceived(
       const std::vector<AXEventNotificationDetails>& details) {}
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_