Prerenders that send an OpenURL are canceled.

chrome/browser/prerender/prerender_contents.cc

Index: chrome/browser/prerender/prerender_contents.cc
diff --git a/chrome/browser/prerender/prerender_contents.cc b/chrome/browser/prerender/prerender_contents.cc
index e1e197f9711808ed29beae1f5ddc2081aa524c66..cc720d27d663da6718dea1f8b75745f83b37a571 100644
--- a/chrome/browser/prerender/prerender_contents.cc
+++ b/chrome/browser/prerender/prerender_contents.cc
@@ -88,6 +88,19 @@ class PrerenderContents::TabContentsDelegateImpl
       prerender_contents_(prerender_contents) {
   }
 
+ virtual TabContents* OpenURLFromTab(TabContents* source,
+                                     const OpenURLParams& params) {

[mmenke, 2011/12/05 15:28:25]

nit:  OVERRIDE

[cbentzel, 2011/12/05 15:30:59]

Done.

+    // |OpenURLFromTab| is typicalled called when a frame performs a navigation

[dominich, 2011/12/05 14:40:41]

nit: typically called :)

[cbentzel, 2011/12/05 15:30:21]

Done.

+    // 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,