Prerender: Allow on low end devices for ORIGIN_OFFLINE

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 366 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(PrerenderData);
   };
 
   // Called by a PrerenderData to signal that the launcher has navigated away
   // from the context that launched the prerender. A user may have clicked
   // a link in a page containing a <link rel=prerender> element, or the user
   // might have committed an omnibox navigation. This is used to possibly
   // shorten the TTL of the prerendered page.
   void SourceNavigatedAway(PrerenderData* prerender_data);
 
+  // Same as base::SysInfo::IsLowEndDevice(), overridden in tests.
+  virtual bool IsLowEndDevice();

[mmenke, 2016/08/03 15:10:58]

const?

[pasko, 2016/08/03 15:30:17]

Oops, sure. Done.

+
  private:
   friend class PrerenderBrowserTest;
   friend class PrerenderContents;
   friend class PrerenderHandle;
   friend class UnitTestPrerenderManager;
 
   class OnCloseWebContentsDeleter;
   struct NavigationRecord;
   using PrerenderDataVector = std::vector<std::unique_ptr<PrerenderData>>;
 
@@ skipping 160 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_