Provide a way to specify in Finch trials to disable prerender local

chrome/browser/prerender/prerender_local_predictor.cc

Index: chrome/browser/prerender/prerender_local_predictor.cc
diff --git a/chrome/browser/prerender/prerender_local_predictor.cc b/chrome/browser/prerender/prerender_local_predictor.cc
index 09af20f14dd06ba917e5bd8b5e2179acc352003d..3e1b441ef70321c1309eb5743e70c29b3723c7b5 100644
--- a/chrome/browser/prerender/prerender_local_predictor.cc
+++ b/chrome/browser/prerender/prerender_local_predictor.cc
@@ -616,6 +616,9 @@ void PrerenderLocalPredictor::OnAddVisit(const history::BriefVisitInfo& info) {
   }
   if (ShouldExcludeTransitionForPrediction(info.transition))
     return;
+  Profile* profile = prerender_manager_->profile();
+  if (!profile || DisableLocalPredictorBasedOnSyncAndConfiguration(profile))

[jkarlin, 2014/09/23 14:54:03]

I expected to see something call your new TemporarilyDisable... function?

[tburkard, 2014/09/24 15:15:34]

Done.

+    return;
   RecordEvent(EVENT_ADD_VISIT_RELEVANT_TRANSITION);
   base::TimeDelta max_age =
       base::TimeDelta::FromMilliseconds(GetMaxLocalPredictionTimeMs());