Re-enable prerender RemovingLink browser tests.

chrome/test/data/prerender/prerender_page_pending.html

Index: chrome/test/data/prerender/prerender_page_pending.html
diff --git a/chrome/test/data/prerender/prerender_page_pending.html b/chrome/test/data/prerender/prerender_page_pending.html
index 177a8ea82ce6a4f1b5bc5ee44bbfc4def31c618e..e3253990988b2edbd3dc02fcffa38aa8a6f033ad 100644
--- a/chrome/test/data/prerender/prerender_page_pending.html
+++ b/chrome/test/data/prerender/prerender_page_pending.html
@@ -14,7 +14,7 @@ var pageWasPrerendered = false;
 
 function DidPrerenderPass() {
   pageWasPrerendered = true;
-  return !receivedPrerenderStartEvents[0] && !receivedPrerenderStopEvents[0];
+  return !GetPrerenderEventCount(0, 'webkitprerenderstart');

[mmenke, 2014/02/13 16:34:33]

optional:  I think it may make more sense to check for event errors here and in
DidDisplay pass than in C++, just in case we ever reuse this file (Same goes for
the other one)

[davidben, 2014/02/14 01:01:13]

Hrm. DidDisplayPass gets called before the pending prerender is necessarily
started though. Actually we currently don't test this page's prerender events at
all post-swap, which should be fixed...

This is actually an unrelated test, so I'll hold on that for a separate CL.

 }
 
 // Make sure DidPrerenderPass() was called first.  Otherwise, the page was