Delete Automation[Tab/Renderer]Helper and users.

chrome/browser/automation/automation_tab_helper.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_BROWSER_AUTOMATION_AUTOMATION_TAB_HELPER_H_
-#define CHROME_BROWSER_AUTOMATION_AUTOMATION_TAB_HELPER_H_
-
-#include <set>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "content/public/browser/web_contents_user_data.h"
-
-class AutomationTabHelper;
-
-// An observer API implemented by classes which are interested in various
-// tab events from AutomationTabHelper(s).
-class TabEventObserver {
- public:
-  // |LOAD_START| and |LOAD_STOP| notifications may occur several times for a
-  // sequence of loads that may appear as one complete navigation to a user.
-  // For instance, navigating to a non-existent page will cause a load start
-  // and stop for the non-existent page; following that, Chrome will schedule
-  // a navigation to an error page which causes another load start and stop.
-  //
-  // A pending load is a load that is currently in progress or one that is
-  // scheduled to occur immediately. The only scheduled loads that are
-  // tracked are client redirects, such as javascript redirects.
-  // TODO(kkania): Handle redirects that are scheduled to occur later, and
-  // change this definition of a pending load.
-  // TODO(kkania): Track other types of scheduled navigations.
-
-  // Called when the tab that had no pending loads now has a new pending
-  // load. |web_contents| will always be valid.
-  virtual void OnFirstPendingLoad(content::WebContents* web_contents) { }
-
-  // Called when the tab that had one or more pending loads now has no
-  // pending loads. |web_contents| will always be valid.
-  //
-  // This method will always be called if |OnFirstPendingLoad| was called.
-  virtual void OnNoMorePendingLoads(content::WebContents* web_contents) { }
-
-  // Called as a result of a tab being snapshotted.
-  virtual void OnSnapshotEntirePageACK(
-      bool success,
-      const std::vector<unsigned char>& png_data,
-      const std::string& error_msg) { }
-
- protected:
-  TabEventObserver();
-  virtual ~TabEventObserver();
-
-  // On construction, this class does not observe any events. This method
-  // sets us up to observe events from the given |AutomationTabHelper|.
-  void StartObserving(AutomationTabHelper* tab_helper);
-
-  // Stop observing events from the given |AutomationTabHelper|. This does not
-  // need to be called before the helper dies, and it is ok if this object is
-  // destructed while it is still observing an |AutomationTabHelper|.
-  void StopObserving(AutomationTabHelper* tab_helper);
-
- private:
-  friend class AutomationTabHelperTest;
-  typedef std::vector<base::WeakPtr<AutomationTabHelper> > EventSourceVector;
-
-  // Vector of all the event sources we are observing. Tracked so that this
-  // class can remove itself from each source at its destruction.
-  EventSourceVector event_sources_;
-
-  DISALLOW_COPY_AND_ASSIGN(TabEventObserver);
-};
-
-// Per-tab automation support class. Receives automation/testing messages
-// from the renderer. Broadcasts tab events to |TabEventObserver|s.
-class AutomationTabHelper
-    : public content::WebContentsObserver,
-      public base::SupportsWeakPtr<AutomationTabHelper>,
-      public content::WebContentsUserData<AutomationTabHelper> {
- public:
-  virtual ~AutomationTabHelper();
-
-  void AddObserver(TabEventObserver* observer);
-  void RemoveObserver(TabEventObserver* observer);
-
-  // Snapshots the entire page without resizing.
-  void SnapshotEntirePage();
-
-#if !defined(NO_TCMALLOC) && (defined(OS_LINUX) || defined(OS_CHROMEOS))
-  // Dumps a heap profile.
-  void HeapProfilerDump(const std::string& reason);
-#endif  // !defined(NO_TCMALLOC) && (defined(OS_LINUX) || defined(OS_CHROMEOS))
-
-  // Returns true if the tab is loading or the tab is scheduled to load
-  // immediately. Note that scheduled loads may be canceled.
-  bool has_pending_loads() const;
-
- private:
-  explicit AutomationTabHelper(content::WebContents* web_contents);
-  friend class content::WebContentsUserData<AutomationTabHelper>;
-
-  friend class AutomationTabHelperTest;
-
-  void OnSnapshotEntirePageACK(
-      bool success,
-      const std::vector<unsigned char>& png_data,
-      const std::string& error_msg);
-
-  // content::WebContentsObserver implementation.
-  virtual void DidStartLoading(
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidStopLoading(
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
-  virtual void WebContentsDestroyed(
-      content::WebContents* web_contents) OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  void OnWillPerformClientRedirect(int64 frame_id, double delay_seconds);
-  void OnDidCompleteOrCancelClientRedirect(int64 frame_id);
-  void OnTabOrRenderViewDestroyed(content::WebContents* web_contents);
-
-  // True if the tab is currently loading. If a navigation is scheduled but not
-  // yet loading, this will be false.
-  bool is_loading_;
-
-  // Set of all the frames (by frame ID) that are scheduled to perform a client
-  // redirect.
-  std::set<int64> pending_client_redirects_;
-
-  // List of all the |TabEventObserver|s, which we broadcast events to.
-  ObserverList<TabEventObserver> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutomationTabHelper);
-};
-
-#endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_TAB_HELPER_H_