Add IPC benchmarking API to Blink TestRunner

content/shell/renderer/test_runner/test_runner.h

 // Copyright 2014 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_SHELL_RENDERER_TEST_RUNNER_TEST_RUNNER_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_TEST_RUNNER_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 540 matching lines @@
   // located at a particular point in the WebView (if there is such an image),
   // reads back its pixels, and provides the snapshot to the callback. If there
   // is no image at that point, calls the callback with (0, 0, empty_snapshot).
   void CopyImageAtAndCapturePixelsAsyncThen(
       int x, int y, const v8::Handle<v8::Function> callback);
 
   void SetMockPushClientSuccess(const std::string& endpoint,
                                 const std::string& registration_id);
   void SetMockPushClientError(const std::string& message);
 
+  void RequestEcho(int id, int size);
+  int GetLastEchoId() const;
+  int GetLastEchoSize() const;
+
   ///////////////////////////////////////////////////////////////////////////
   // Internal helpers
 
   void CapturePixelsCallback(scoped_ptr<InvokeCallbackTask> task,
                              const SkBitmap& snapshot);
 
   void CheckResponseMimeType();
   void CompleteNotifyDone();
 
   void DidAcquirePointerLockInternal();
@@ skipping 195 matching lines @@
   bool use_mock_theme_;
 
   base::WeakPtrFactory<TestRunner> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TestRunner);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_TEST_RUNNER_H_