Revert of Add DumpAccessibilityEvents test framework.

content/browser/accessibility/accessibility_event_recorder.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_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EVENT_RECORDER_H_
-#define CONTENT_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EVENT_RECORDER_H_
-
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "content/common/content_export.h"
-
-namespace content {
-
-class BrowserAccessibilityManager;
-
-// Listens for native accessibility events fired by a given
-// BrowserAccessibilityManager and saves human-readable log strings for
-// each event fired to a vector. Construct an instance of this class to
-// begin listening, call GetEventLogs() to get all of the logs so far, and
-// destroy it to stop listening.
-//
-// A log string should be of the form "<event> on <node>" where <event> is
-// the name of the event fired (platform-specific) and <node> is information
-// about the accessibility node on which the event was fired, for example its
-// role and name.
-//
-// The implementation is highly platform-specific; a subclass is needed for
-// each platform does most of the work.
-class AccessibilityEventRecorder {
- public:
-  // Construct the right platform-specific subclass.
-  static AccessibilityEventRecorder* Create(
-      BrowserAccessibilityManager* manager);
-  virtual ~AccessibilityEventRecorder();
-
-  // Access the vector of human-readable event logs, one string per event.
-  const std::vector<std::string>& event_logs() { return event_logs_; }
-
- protected:
-  explicit AccessibilityEventRecorder(BrowserAccessibilityManager* manager);
-
-  BrowserAccessibilityManager* manager_;
-  std::vector<std::string> event_logs_;
-
-  DISALLOW_COPY_AND_ASSIGN(AccessibilityEventRecorder);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ACCESSIBILITY_ACCESSIBILITY_EVENT_RECORDER_H_