Update WebFrameTestProxy and WebTestProxy to mostly follow Chrome style.

content/shell/renderer/test_runner/MockWebRTCDataChannelHandler.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_MOCKWEBRTCDATACHANNELHANDLER_H_
 #define CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCKWEBRTCDATACHANNELHANDLER_H_
 
 #include "base/basictypes.h"
 #include "content/shell/renderer/test_runner/TestCommon.h"
 #include "content/shell/renderer/test_runner/WebTask.h"
@@ skipping 17 matching lines @@
     virtual unsigned short maxRetransmits() const OVERRIDE;
     virtual blink::WebString protocol() const OVERRIDE;
     virtual bool negotiated() const OVERRIDE;
     virtual unsigned short id() const OVERRIDE;
     virtual unsigned long bufferedAmount() OVERRIDE;
     virtual bool sendStringData(const blink::WebString&) OVERRIDE;
     virtual bool sendRawData(const char*, size_t) OVERRIDE;
     virtual void close() OVERRIDE;
 
     // WebTask related methods
-    WebTaskList* taskList() { return &m_taskList; }
+    WebTaskList* mutable_task_list() { return &m_taskList; }
 
 private:
     MockWebRTCDataChannelHandler();
 
     blink::WebRTCDataChannelHandlerClient* m_client;
     blink::WebString m_label;
     blink::WebRTCDataChannelInit m_init;
     bool m_reliable;
     WebTaskList m_taskList;
     WebTestDelegate* m_delegate;
 
     DISALLOW_COPY_AND_ASSIGN(MockWebRTCDataChannelHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCKWEBRTCDATACHANNELHANDLER_H_