Replacing most of web_task.h with base::Closure + base::WeakPtrFactory.

components/test_runner/mock_color_chooser.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 COMPONENTS_TEST_RUNNER_MOCK_COLOR_CHOOSER_H_
 #define COMPONENTS_TEST_RUNNER_MOCK_COLOR_CHOOSER_H_
 
 #include "base/macros.h"
-#include "components/test_runner/web_task.h"
+#include "base/memory/weak_ptr.h"
 #include "third_party/WebKit/public/web/WebColorChooser.h"
 #include "third_party/WebKit/public/web/WebColorChooserClient.h"
 
 namespace test_runner {
 
 class TestRunner;
 class WebTestDelegate;
 
 class MockColorChooser : public blink::WebColorChooser {
  public:
   // Caller has to guarantee that |client| and |delegate| are alive
   // until |WebColorChooserClient::didEndChooser| is called.
   // Caller has to guarantee that |test_runner| lives longer
   // than MockColorChooser.
   MockColorChooser(blink::WebColorChooserClient* client,
                    WebTestDelegate* delegate,
                    TestRunner* test_runner);
   ~MockColorChooser() override;
 
   // blink::WebColorChooser implementation.
   void setSelectedColor(const blink::WebColor color) override;
   void endChooser() override;
 
   void InvokeDidEndChooser();
-  WebTaskList* mutable_task_list() { return &task_list_; }
 
  private:
   blink::WebColorChooserClient* client_;
   WebTestDelegate* delegate_;
   TestRunner* test_runner_;
-  WebTaskList task_list_;
+
+  base::WeakPtrFactory<MockColorChooser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MockColorChooser);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_MOCK_COLOR_CHOOSER_H_