Revert "Add IPC benchmarking API to Blink TestRunner"

content/shell/renderer/test_runner/WebTestDelegate.h

 // Copyright 2013 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_WEBTESTDELEGATE_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_WEBTESTDELEGATE_H_
 
 #include <string>
 
 #include "third_party/WebKit/public/platform/WebScreenOrientationType.h"
@@ skipping 150 matching lines @@
     virtual void goToOffset(int offset) = 0;
     virtual void reload() = 0;
     virtual void loadURLForFrame(const blink::WebURL&, const std::string& frameName) = 0;
 
     // Returns true if resource requests to external URLs should be permitted.
     virtual bool allowExternalPages() = 0;
 
     // Returns a text dump the back/forward history for the WebView associated
     // with the given WebTestProxyBase.
     virtual std::string dumpHistoryForWindow(WebTestProxyBase*) = 0;
-
-    // Send an IPC message will will be echoed back.
-    virtual void requestEcho(int id, int size) = 0;
-    virtual int lastEchoId() = 0;
-    virtual int lastEchoSize() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_WEBTESTDELEGATE_H_