Introduce content::PageState

content/browser/renderer_host/render_view_host_impl.h

Index: content/browser/renderer_host/render_view_host_impl.h
diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
index c96e0f3f47aed5576a8dc0accfe49f6e24141edb..8600f8a974b4f5084031ae595c9348a13aafcb46 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -54,6 +54,7 @@ struct SelectedFileInfo;
 namespace content {
 
 class ChildProcessSecurityPolicyImpl;
+class PageState;
 class PowerSaveBlocker;
 class RenderViewHostObserver;
 class RenderWidgetHostDelegate;
@@ -479,7 +480,7 @@ class CONTENT_EXPORT RenderViewHostImpl
   void OnDidFailProvisionalLoadWithError(
       const ViewHostMsg_DidFailProvisionalLoadWithError_Params& params);
   void OnNavigate(const IPC::Message& msg);
-  void OnUpdateState(int32 page_id, const std::string& state);
+  void OnUpdateState(int32 page_id, const PageState& state);
   void OnUpdateTitle(int32 page_id,
                      const string16& title,
                      WebKit::WebTextDirection title_direction);
@@ -571,7 +572,7 @@ class CONTENT_EXPORT RenderViewHostImpl
 
   void ClearPowerSaveBlockers();
 
-  bool CanAccessFilesOfSerializedState(const std::string& state) const;
+  bool CanAccessFilesOfPageState(const PageState& state) const;
 
   // Our delegate, which wants to know about changes in the RenderView.
   RenderViewHostDelegate* delegate_;