Revert of Revert of Make start/stop loading notifications per-frame

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 45 matching lines @@
 class FrameSelection;
 class HaltablePlugin;
 class HistoryItem;
 class InspectorClient;
 class InspectorController;
 class Node;
 class PageLifecycleNotifier;
 class PlatformMouseEvent;
 class PluginData;
 class PointerLockController;
-class ProgressTracker;
 class Range;
 class RenderBox;
 class RenderObject;
 class RenderTheme;
 class StorageClient;
 class VisibleSelection;
 class ScrollableArea;
 class ScrollingCoordinator;
 class Settings;
 class SpellCheckerClient;
@@ skipping 77 matching lines @@
     PointerLockController& pointerLockController() const { return *m_pointerLockController; }
     ValidationMessageClient* validationMessageClient() const { return m_validationMessageClient; }
     void setValidationMessageClient(ValidationMessageClient* client) { m_validationMessageClient = client; }
 
     ScrollingCoordinator* scrollingCoordinator();
 
     String mainThreadScrollingReasonsAsText();
     PassRefPtr<ClientRectList> nonFastScrollableRects(const LocalFrame*);
 
     Settings& settings() const { return *m_settings; }
-    ProgressTracker& progress() const { return *m_progress; }
     BackForwardClient& backForward() const { return *m_backForwardClient; }
 
     UseCounter& useCounter() { return m_useCounter; }
 
     void setTabKeyCyclesThroughElements(bool b) { m_tabKeyCyclesThroughElements = b; }
     bool tabKeyCyclesThroughElements() const { return m_tabKeyCyclesThroughElements; }
 
     void unmarkAllTextMatches();
 
     // DefersLoading is used to delay loads during modal dialogs.
@@ skipping 70 matching lines @@
     const OwnPtr<Chrome> m_chrome;
     const OwnPtr<DragCaretController> m_dragCaretController;
     const OwnPtr<DragController> m_dragController;
     const OwnPtr<FocusController> m_focusController;
     const OwnPtr<ContextMenuController> m_contextMenuController;
     const OwnPtr<InspectorController> m_inspectorController;
     const OwnPtr<PointerLockController> m_pointerLockController;
     OwnPtr<ScrollingCoordinator> m_scrollingCoordinator;
 
     const OwnPtr<HistoryController> m_historyController;
-    const OwnPtr<ProgressTracker> m_progress;
     const OwnPtr<UndoStack> m_undoStack;
 
     RefPtr<LocalFrame> m_mainFrame;
 
     mutable RefPtr<PluginData> m_pluginData;
 
     BackForwardClient* m_backForwardClient;
     EditorClient* const m_editorClient;
     ValidationMessageClient* m_validationMessageClient;
     SpellCheckerClient* const m_spellCheckerClient;
@@ skipping 25 matching lines @@
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtr<FrameHost> m_frameHost;
 };
 
 } // namespace WebCore
 
 #endif // Page_h