Revert 272611 "Add support for distilling current WebContents"

trunk/src/components/dom_distiller/content/web_contents_main_frame_observer.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_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_
-#define COMPONENTS_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_
-
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "content/public/browser/web_contents_user_data.h"
-
-namespace dom_distiller {
-
-// Tracks whether DocumentLoadedInFrame has been called for the main frame for
-// the current main frame for the given WebContents. It removes itself as an
-// observer if the WebContents is destroyed or the render process is gone.
-class WebContentsMainFrameObserver
-    : public content::WebContentsObserver,
-      public content::WebContentsUserData<WebContentsMainFrameObserver> {
- public:
-  virtual ~WebContentsMainFrameObserver();
-
-  bool is_document_loaded_in_main_frame() {
-    return is_document_loaded_in_main_frame_;
-  }
-
-  bool is_initialized() { return is_initialized_; }
-
-  // content::WebContentsObserver implementation.
-  virtual void DocumentLoadedInFrame(
-      int64 frame_id,
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) OVERRIDE;
-  virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
-  virtual void WebContentsDestroyed() OVERRIDE;
-
- private:
-  explicit WebContentsMainFrameObserver(content::WebContents* web_contents);
-  friend class content::WebContentsUserData<WebContentsMainFrameObserver>;
-
-  // Removes the observer and clears the WebContents member.
-  void CleanUp();
-
-  // Whether DocumentLoadedInFrame has been called for the tracked WebContents
-  // for the current main frame. This is cleared when the main frame navigates,
-  // and set again when DocumentLoadedInFrame is called for the main frame.
-  bool is_document_loaded_in_main_frame_;
-
-  // Whether this object has been correctly initialized. This is set as soon as
-  // at least one call to DidNavigateMainFrame has happened.
-  bool is_initialized_;
-
-  // The WebContents this class is tracking.
-  content::WebContents* web_contents_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebContentsMainFrameObserver);
-};
-
-}  // namespace dom_distiller
-
-#endif  // COMPONENTS_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_