[NoStatePrefetch] Add performance histograms.

chrome/browser/prerender/prerender_tab_helper.cc

Index: chrome/browser/prerender/prerender_tab_helper.cc
diff --git a/chrome/browser/prerender/prerender_tab_helper.cc b/chrome/browser/prerender/prerender_tab_helper.cc
index 3be768c8126839faf64237b96e2b842f42fc410e..33f345ca64ef3a0d24b6942694c25e883f557a1f 100644
--- a/chrome/browser/prerender/prerender_tab_helper.cc
+++ b/chrome/browser/prerender/prerender_tab_helper.cc
@@ -129,8 +129,8 @@ void PrerenderTabHelper::MainFrameUrlDidChange(const GURL& url) {
 }
 
 PrerenderManager* PrerenderTabHelper::MaybeGetPrerenderManager() const {
-  return PrerenderManagerFactory::GetForProfile(
-      Profile::FromBrowserContext(web_contents()->GetBrowserContext()));
+  return PrerenderManagerFactory::GetForBrowserContext(
+      web_contents()->GetBrowserContext());
 }
 
 bool PrerenderTabHelper::IsPrerendering() {