Prevent changes to NavigationEntry's URL for a provisional redirect.

content/browser/tab_contents/tab_contents.cc

Index: content/browser/tab_contents/tab_contents.cc
diff --git a/content/browser/tab_contents/tab_contents.cc b/content/browser/tab_contents/tab_contents.cc
index 5940baf6f9559dc025d0443abcbaeadcb2ec3387..b884a9077e9384a6a0284a7d45d2dd3012017b4b 100644
--- a/content/browser/tab_contents/tab_contents.cc
+++ b/content/browser/tab_contents/tab_contents.cc
@@ -1303,6 +1303,9 @@ void TabContents::OnDidStartProvisionalLoadForFrame(int64 frame_id,
 void TabContents::OnDidRedirectProvisionalLoad(int32 page_id,
                                                const GURL& source_url,
                                                const GURL& target_url) {
+  // TODO(creis): Remove this method and have the pre-rendering code listen to
+  // the ResourceDispatcherHost's RESOURCE_RECEIVED_REDIRECT notification
+  // instead.  See http://crbug.com/78512.
   NavigationEntry* entry;
   if (page_id == -1)
     entry = controller_.pending_entry();
@@ -1310,7 +1313,6 @@ void TabContents::OnDidRedirectProvisionalLoad(int32 page_id,
     entry = controller_.GetEntryWithPageID(GetSiteInstance(), page_id);
   if (!entry || entry->url() != source_url)
     return;
-  entry->set_url(target_url);
 
   // Notify observers about the provisional change in the main frame URL.
   FOR_EACH_OBSERVER(TabContentsObserver, observers_,