Prerendering: Add MatchComplete PPLT

chrome/browser/prerender/prerender_manager.h

Index: chrome/browser/prerender/prerender_manager.h
===================================================================
--- chrome/browser/prerender/prerender_manager.h	(revision 109294)
+++ chrome/browser/prerender/prerender_manager.h	(working copy)
@@ -128,7 +128,8 @@
 
   // Moves a PrerenderContents to the pending delete list from the list of
   // active prerenders when prerendering should be cancelled.
-  void MoveEntryToPendingDelete(PrerenderContents* entry);
+  void MoveEntryToPendingDelete(PrerenderContents* entry,
+                                FinalStatus final_status);
 
   // Records the perceived page load time for a page - effectively the time from
   // when the user navigates to a page to when it finishes loading. The actual
@@ -152,6 +153,7 @@
   static PrerenderManagerMode GetMode();
   static void SetMode(PrerenderManagerMode mode);
   static bool IsPrerenderingPossible();
+  static bool ActuallyPrerendering();
   static bool IsControlGroup();
 
   // Query the list of current prerender pages to see if the given tab contents
@@ -329,6 +331,11 @@
   // observed.
   bool WithinWindow() const;
 
+  // Indicates whether a Prerender has been cancelled such that we need
+  // a dummy replacement for the purpose of recording the correct PPLT for
+  // the Match Complete case.
+  bool NeedMatchCompleteDummyForFinalStatus(FinalStatus final_status) const;
+
   bool DoesRateLimitAllowPrerender() const;
 
   // Deletes old TabContents that have been replaced by prerendered ones.  This