Prerenders that send an OpenURL are canceled.

chrome/browser/prerender/prerender_contents.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/prerender/prerender_contents.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/process_util.h"
@@ skipping 70 matching lines @@
 
 // TabContentsDelegateImpl -----------------------------------------------------
 
 class PrerenderContents::TabContentsDelegateImpl
     : public TabContentsDelegate {
  public:
   explicit TabContentsDelegateImpl(PrerenderContents* prerender_contents) :
       prerender_contents_(prerender_contents) {
   }
 
+ virtual TabContents* OpenURLFromTab(TabContents* source,
+                                     const OpenURLParams& params) OVERRIDE {
+    // |OpenURLFromTab| is typically called when a frame performs a navigation
+    // that requires the browser to perform the transition instead of WebKit.
+    // Examples include prerendering a site that redirects to an app URL,
+    // or if --enable-strict-site-isolation is specified and the prerendered
+    // frame redirects to a different origin.
+    // TODO(cbentzel): Consider supporting this is if it is a common case
+    // during prerenders.
+    prerender_contents_->Destroy(FINAL_STATUS_OPEN_URL);
+    return NULL;
+  }
+
   // TabContentsDelegate implementation:
   virtual bool ShouldAddNavigationToHistory(
       const history::HistoryAddPageArgs& add_page_args,
       content::NavigationType navigation_type) OVERRIDE {
     add_page_vector_.push_back(
         scoped_refptr<history::HistoryAddPageArgs>(add_page_args.Clone()));
     return false;
   }
 
   virtual bool CanDownload(TabContents* source, int request_id) OVERRIDE {
@@ skipping 575 matching lines @@
 bool PrerenderContents::IsCrossSiteNavigationPending() const {
   if (!prerender_contents_.get() || !prerender_contents_->tab_contents())
     return false;
   const TabContents* tab_contents = prerender_contents_->tab_contents();
   return (tab_contents->GetSiteInstance() !=
           tab_contents->GetPendingSiteInstance());
 }
 
 
 }  // namespace prerender