Prerender: omnibox and instant field trial parameters.

chrome/browser/prerender/prerender_manager.h

Index: chrome/browser/prerender/prerender_manager.h
diff --git a/chrome/browser/prerender/prerender_manager.h b/chrome/browser/prerender/prerender_manager.h
index ac3749134f0d6af756391b784e2bd3e729fcea17..62447f6dc5e2e232fed1191200cb755197a2851d 100644
--- a/chrome/browser/prerender/prerender_manager.h
+++ b/chrome/browser/prerender/prerender_manager.h
@@ -241,9 +241,11 @@ class PrerenderManager : public content::NotificationObserver,
                                            bool was_hidden,
                                            base::TimeTicks ticks);
 
-  static PrerenderManagerMode GetMode();
+  static PrerenderManagerMode GetMode(Origin origin);
   static void SetMode(PrerenderManagerMode mode);
-  static bool IsPrerenderingPossible();
+  static void SetOmniboxMode(PrerenderManagerMode mode);
+  static void SetInstantMode(PrerenderManagerMode mode);
+  static bool IsAnyPrerenderingPossible();
   static bool IsNoStatePrefetch(Origin origin);
   static bool IsSimpleLoadExperiment(Origin origin);
 
@@ -607,6 +609,8 @@ class PrerenderManager : public content::NotificationObserver,
   std::unique_ptr<PrerenderContents::Factory> prerender_contents_factory_;
 
   static PrerenderManagerMode mode_;
+  static PrerenderManagerMode instant_mode_;
+  static PrerenderManagerMode omnibox_mode_;
 
   // A count of how many prerenders we do per session. Initialized to 0 then
   // incremented and emitted to a histogram on each successful prerender.