[Tests not passing yet] Remove prerender sessionStorage namespace merging.

chrome/browser/prerender/prerender_contents.h

Index: chrome/browser/prerender/prerender_contents.h
diff --git a/chrome/browser/prerender/prerender_contents.h b/chrome/browser/prerender/prerender_contents.h
index ad8cccb20ce6322f1e5b79ca12cc3ef814536a81..75b9508fe5fe8cce028589b5844aeb4b5d75f632 100644
--- a/chrome/browser/prerender/prerender_contents.h
+++ b/chrome/browser/prerender/prerender_contents.h
@@ -190,7 +190,6 @@ class PrerenderContents : public content::NotificationObserver,
 
   Origin origin() const { return origin_; }
   uint8 experiment_id() const { return experiment_id_; }
-  int child_id() const { return child_id_; }
 
   base::TimeTicks load_start_time() const { return load_start_time_; }
 
@@ -266,8 +265,6 @@ class PrerenderContents : public content::NotificationObserver,
   // Marks prerender as used and releases any throttled resource requests.
   void PrepareForUse();
 
-  content::SessionStorageNamespace* GetSessionStorageNamespace() const;
-
   // Cookie events
   enum CookieEvent {
     COOKIE_EVENT_SEND = 0,
@@ -436,10 +433,6 @@ class PrerenderContents : public content::NotificationObserver,
   // Caches pages to be added to the history.
   AddPageVector add_page_vector_;
 
-  // The alias session storage namespace for this prerender.
-  scoped_refptr<content::SessionStorageNamespace>
-      alias_session_storage_namespace;
-
   // Indicates what internal cookie events (see prerender_contents.cc) have
   // occurred, using 1 bit for each possible InternalCookieEvent.
   int cookie_status_;