Fix PerformanceResourceTiming transferSize field for sync XHR

third_party/WebKit/Source/platform/testing/weburl_loader_mock.h

 // Copyright 2016 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 WebURLLoaderMock_h
 #define WebURLLoaderMock_h
 
 #include "base/macros.h"
 #include "public/platform/WebURLLoader.h"
 #include "wtf/WeakPtr.h"
@@ skipping 30 matching lines @@
 
   // Simulates the redirect being served.
   WebURLRequest ServeRedirect(
       const WebURLRequest& request,
       const WebURLResponse& redirectResponse);
 
   // WebURLLoader methods:
   void loadSynchronously(const WebURLRequest& request,
                          WebURLResponse& response,
                          WebURLError& error,
-                         WebData& data) override;
+                         WebData& data,
+                         int64_t& encoded_data_length) override;
   void loadAsynchronously(const WebURLRequest& request,
                           WebURLLoaderClient* client) override;
   void cancel() override;
   void setDefersLoading(bool defer) override;
   void setLoadingTaskRunner(WebTaskRunner*) override;
 
   bool is_deferred() { return is_deferred_; }
   bool is_cancelled() { return !client_; }
 
   WeakPtr<WebURLLoaderMock> GetWeakPtr();
 
  private:
   WebURLLoaderMockFactoryImpl* factory_ = nullptr;
   WebURLLoaderClient* client_ = nullptr;
   std::unique_ptr<WebURLLoader> default_loader_;
   bool using_default_loader_ = false;
   bool is_deferred_ = false;
 
   WeakPtrFactory<WebURLLoaderMock> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebURLLoaderMock);
 };
 
 } // namespace blink
 
 #endif  // WebURLLoaderMock_h