Add Perceived PageLoad Time (PPLT) metrics for Prerender Experiments,...

chrome/browser/prerender/prerender_contents.cc

Index: chrome/browser/prerender/prerender_contents.cc
===================================================================
--- chrome/browser/prerender/prerender_contents.cc	(revision 72694)
+++ chrome/browser/prerender/prerender_contents.cc	(working copy)
@@ -37,7 +37,8 @@
       render_view_host_(NULL),
       prerender_url_(url),
       profile_(profile),
-      page_id_(0) {
+      page_id_(0),
+      has_stopped_loading_(false) {
   DCHECK(prerender_manager != NULL);
   AddAliasURL(prerender_url_);
   for (std::vector<GURL>::const_iterator it = alias_urls.begin();
@@ -279,3 +280,7 @@
   return std::find(alias_urls_.begin(), alias_urls_.end(), url)
       != alias_urls_.end();
 }
+
+void PrerenderContents::DidStopLoading() {
+  has_stopped_loading_ = true;
+}