Prerender: NoStatePrefetch browser side changes.

chrome/browser/prerender/prerender_manager.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 65 matching lines @@
   enum PrerenderManagerMode {
     PRERENDER_MODE_DISABLED = 0,
     PRERENDER_MODE_ENABLED = 1,
     PRERENDER_MODE_EXPERIMENT_CONTROL_GROUP = 2,
     PRERENDER_MODE_EXPERIMENT_PRERENDER_GROUP = 3,
     // Obsolete: PRERENDER_MODE_EXPERIMENT_5MIN_TTL_GROUP = 4,
     PRERENDER_MODE_EXPERIMENT_NO_USE_GROUP = 5,
     PRERENDER_MODE_EXPERIMENT_MULTI_PRERENDER_GROUP = 6,
     PRERENDER_MODE_EXPERIMENT_15MIN_TTL_GROUP = 7,
     // Obsolete: PRERENDER_MODE_EXPERIMENT_MATCH_COMPLETE_GROUP = 8,
-    PRERENDER_MODE_MAX = 9
+    PRERENDER_MODE_NOSTATE_PREFETCH = 9,
+    PRERENDER_MODE_MAX = 10
   };
 
   // One or more of these flags must be passed to ClearData() to specify just
   // what data to clear.  See function declaration for more information.
   enum ClearFlags {
     CLEAR_PRERENDER_CONTENTS = 0x1 << 0,
     CLEAR_PRERENDER_HISTORY = 0x1 << 1,
     CLEAR_MAX = 0x1 << 2
   };
 
@@ skipping 100 matching lines @@
       double fraction_plt_elapsed_at_swap_in,
       const GURL& url);
 
   static PrerenderManagerMode GetMode();
   static void SetMode(PrerenderManagerMode mode);
   static const char* GetModeString();
   static bool IsPrerenderingPossible();
   static bool ActuallyPrerendering();
   static bool IsControlGroup();
   static bool IsNoUseGroup();
+  static bool IsNoStatePrefetch();
 
   // Query the list of current prerender pages to see if the given web contents
   // is prerendering a page. The optional parameter |origin| is an output
   // parameter which, if a prerender is found, is set to the Origin of the
   // prerender |web_contents|.
   bool IsWebContentsPrerendering(const content::WebContents* web_contents,
                                  Origin* origin) const;
 
   // Whether the PrerenderManager has an active prerender with the given url and
   // SessionStorageNamespace associated with the given WebContents.
@@ skipping 343 matching lines @@
   // Set of process hosts being prerendered.
   using PrerenderProcessSet = std::set<content::RenderProcessHost*>;
   PrerenderProcessSet prerender_process_hosts_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderManager);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_