Move JavascriptTestObserver from chrome to content.

chrome/test/base/javascript_test_observer.h

-// Copyright (c) 2012 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 CHROME_TEST_BASE_JAVASCRIPT_TEST_OBSERVER_H_
-#define CHROME_TEST_BASE_JAVASCRIPT_TEST_OBSERVER_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-namespace base {
-class DictionaryValue;
-}
-
-namespace content {
-class WebContents;
-}
-
-// Base class for handling a stream of automation messages produced by a
-// JavascriptTestObserver.
-class TestMessageHandler {
- public:
-  enum MessageResponse {
-    // Reset the timeout and keep running.
-    CONTINUE,
-    // Stop runnning.
-    DONE
-  };
-
-  TestMessageHandler();
-  virtual ~TestMessageHandler();
-
-  // Called when a message is received from the DOM automation controller.
-  virtual MessageResponse HandleMessage(const std::string& json) = 0;
-
-  void SetError(const std::string& message);
-
-  bool ok() const {
-    return ok_;
-  }
-
-  const std::string& error_message() const {
-    return error_message_;
-  }
-
-  // Prepare the handler to be used or reused.
-  virtual void Reset();
-
- private:
-  bool ok_;
-  std::string error_message_;
-};
-
-// This class captures a stream of automation messages coming from a Javascript
-// test and dispatches them to a message handler.
-class JavascriptTestObserver : public content::NotificationObserver {
- public:
-  // The observer does not own any arguments passed to it.  It is assumed that
-  // the arguments will outlive all uses of the observer.
-  JavascriptTestObserver(
-      content::WebContents* web_contents,
-      TestMessageHandler* handler);
-
-  virtual ~JavascriptTestObserver();
-
-  // Pump the message loop until the message handler indicates the Javascript
-  // test is done running.  Return true if the test jig functioned correctly and
-  // nothing timed out.
-  bool Run();
-
-  // Prepare the observer to be used again.  This method should NOT be called
-  // while Run() is pumping the message loop.
-  void Reset();
-
-  virtual void Observe(
-      int type,
-      const content::NotificationSource& source,
-      const content::NotificationDetails& details) OVERRIDE;
-
- private:
-  // This message did not signal the end of a test, keep going.
-  void Continue();
-
-  // This was the last message we care about, stop listening for more messages.
-  void EndTest();
-
-  TestMessageHandler* handler_;
-  bool running_;
-  bool finished_;
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(JavascriptTestObserver);
-};
-
-#endif  // CHROME_TEST_BASE_JAVASCRIPT_TEST_OBSERVER_H_