Update WebFrameTestProxy and WebTestProxy to mostly follow Chrome style.

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 33 matching lines @@
   explicit TestRunner(TestInterfaces*);
   virtual ~TestRunner();
 
   void Install(blink::WebFrame* frame);
 
   void SetDelegate(WebTestDelegate*);
   void SetWebView(blink::WebView*, WebTestProxyBase*);
 
   void Reset();
 
-  WebTaskList* taskList() { return &task_list_; }
+  WebTaskList* mutable_task_list() { return &task_list_; }
 
   void SetTestIsRunning(bool);
   bool TestIsRunning() const { return test_is_running_; }
 
   bool UseMockTheme() const { return use_mock_theme_; }
 
   void InvokeCallback(scoped_ptr<InvokeCallbackTask> callback);
 
   // WebTestRunner implementation.
   virtual bool shouldGeneratePixelResults() OVERRIDE;
@@ skipping 78 matching lines @@
     virtual ~WorkQueue();
     void ProcessWorkSoon();
 
     // Reset the state of the class between tests.
     void Reset();
 
     void AddWork(WorkItem*);
 
     void set_frozen(bool frozen) { frozen_ = frozen; }
     bool is_empty() { return queue_.empty(); }
-    WebTaskList* taskList() { return &task_list_; }
+    WebTaskList* mutable_task_list() { return &task_list_; }
 
    private:
     void ProcessWork();
 
     class WorkQueueTask : public WebMethodTask<WorkQueue> {
      public:
       WorkQueueTask(WorkQueue* object) : WebMethodTask<WorkQueue>(object) {}
 
       virtual void runIfValid() OVERRIDE;
     };
@@ skipping 545 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_