Move ExtraData from WebRequest to WebDataSource....

chrome/renderer/render_view.h

Index: chrome/renderer/render_view.h
===================================================================
--- chrome/renderer/render_view.h	(revision 16382)
+++ chrome/renderer/render_view.h	(working copy)
@@ -171,6 +171,7 @@
 
   virtual void DidStartLoading(WebView* webview);
   virtual void DidStopLoading(WebView* webview);
+  virtual void DidCreateDataSource(WebFrame* frame, WebDataSource* ds);
   virtual void DidStartProvisionalLoadForFrame(
       WebView* webview,
       WebFrame* frame,
@@ -801,6 +802,13 @@
   // The text selection the last time DidChangeSelection got called.
   std::string last_selection_;
 
+  // Holds state pertaining to a navigation that we initiated.  This is held by
+  // the WebDataSource::ExtraData attribute.  We use pending_navigation_state_
+  // as a temporary holder for the state until the WebDataSource corresponding
+  // to the new navigation is created.  See DidCreateDataSource.
+  class NavigationState;
+  scoped_ptr<NavigationState> pending_navigation_state_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };