Handle interface to prerenders.

chrome/browser/predictors/autocomplete_action_predictor.h

Index: chrome/browser/predictors/autocomplete_action_predictor.h
diff --git a/chrome/browser/predictors/autocomplete_action_predictor.h b/chrome/browser/predictors/autocomplete_action_predictor.h
index afbba8354ca71bd138c8fd5d4b3a71a8e2c5abe4..b8b04ba7437dc6abf19bf3e564faf6bb02cb259d 100644
--- a/chrome/browser/predictors/autocomplete_action_predictor.h
+++ b/chrome/browser/predictors/autocomplete_action_predictor.h
@@ -14,10 +14,12 @@
 #include "base/string16.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/predictors/autocomplete_action_predictor_table.h"
+#include "chrome/browser/prerender/prerender_handle.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "googleurl/src/gurl.h"
+#include "ui/gfx/size.h"
 
 struct AutocompleteLog;
 struct AutocompleteMatch;
@@ -26,6 +28,10 @@ class HistoryService;
 class PredictorsHandler;
 class Profile;
 
+namespace content {
+  class SessionStorageNamespace;
+}
+
 namespace history {
 class URLDatabase;
 }
@@ -79,6 +85,11 @@ class AutocompleteActionPredictor
   Action RecommendAction(const string16& user_text,
                          const AutocompleteMatch& match) const;
 
+  void StartPrerendering(

[dominich, 2012/06/28 00:34:32]

this'll need a comment.

+      const GURL& url,
+      content::SessionStorageNamespace* session_storage_namespace,
+      gfx::Size size);
+
   // Return true if the suggestion type warrants a TCP/IP preconnection.
   // i.e., it is now quite likely that the user will select the related domain.
   static bool IsPreconnectable(const AutocompleteMatch& match);
@@ -199,6 +210,8 @@ class AutocompleteActionPredictor
   // This is cleared after every Omnibox navigation.
   std::vector<TransitionalMatch> transitional_matches_;
 
+  prerender::PrerenderHandle prerender_handle_;
+
   // This allows us to predict the effect of confidence threshold changes on
   // accuracy.  This is cleared after every omnibox navigation.
   mutable std::vector<std::pair<GURL, double> > tracked_urls_;