Add prefetch UMA metrics.

net/url_request/test_url_fetcher_factory.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 NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_
 #define NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 290 matching lines @@
 
   const GURL& GetURL() const override;
 
   ~FakeURLFetcher() override;
 
  private:
   // This is the method which actually calls the delegate that is passed in the
   // constructor.
   void RunDelegate();
 
+  int64 response_bytes_;

[mef, 2015/06/26 17:27:36]

according to base/basictypes.h it should be int64_t and include <stdint.h>

[twifkak, 2015/06/26 17:48:57]

Done.

   base::WeakPtrFactory<FakeURLFetcher> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeURLFetcher);
 };
 
 
 // FakeURLFetcherFactory is a factory for FakeURLFetcher objects. When
 // instantiated, it sets itself up as the default URLFetcherFactory. Fake
 // responses for given URLs can be set using SetFakeResponse.
 //
@@ skipping 134 matching lines @@
   // This method will create a real URLFetcher.
   scoped_ptr<URLFetcher> CreateURLFetcher(int id,
                                           const GURL& url,
                                           URLFetcher::RequestType request_type,
                                           URLFetcherDelegate* d) override;
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_