Use int64 time stamp when storing metadata to the HTTP cache.

content/renderer/renderer_blink_platform_impl.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 CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 60 matching lines @@
       blink::WebSpeechSynthesizerClient* client);
   virtual bool sandboxEnabled();
   virtual unsigned long long visitedLinkHash(
       const char* canonicalURL, size_t length);
   virtual bool isLinkVisited(unsigned long long linkHash);
   virtual void createMessageChannel(blink::WebMessagePortChannel** channel1,
                                     blink::WebMessagePortChannel** channel2);
   virtual blink::WebPrescientNetworking* prescientNetworking();
   virtual void cacheMetadata(
       const blink::WebURL&, double, const char*, size_t);
+  virtual void cacheMetadata(const blink::WebURL&, int64, const char*, size_t);
   virtual blink::WebString defaultLocale();
   virtual void suddenTerminationChanged(bool enabled);
   virtual blink::WebStorageNamespace* createLocalStorageNamespace();
   virtual blink::Platform::FileHandle databaseOpenFile(
       const blink::WebString& vfs_file_name, int desired_flags);
   virtual int databaseDeleteFile(const blink::WebString& vfs_file_name,
                                  bool sync_dir);
   virtual long databaseGetFileAttributes(
       const blink::WebString& vfs_file_name);
   virtual long long databaseGetFileSize(
@@ skipping 161 matching lines @@
   device::VibrationManagerPtr vibration_manager_;
 
   IDMap<PlatformEventObserverBase, IDMapOwnPointer> platform_event_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererBlinkPlatformImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_