Start moving core pieces of Chrome multi-process code to src\content.

chrome/browser/tab_contents/tab_contents_observer.h

 // Copyright (c) 2011 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_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_
 
-#include "chrome/browser/tab_contents/navigation_controller.h"
-#include "ipc/ipc_channel.h"
-
-struct ViewHostMsg_FrameNavigate_Params;
-
-// An observer API implemented by classes which are interested in various page
-// load events from TabContents.  They also get a chance to filter IPC messages.
-class TabContentsObserver : public IPC::Channel::Listener {
- public:
-  virtual void NavigateToPendingEntry() { }
-
-  virtual void DidNavigateMainFramePostCommit(
-      const NavigationController::LoadCommittedDetails& details,
-      const ViewHostMsg_FrameNavigate_Params& params) { }
-  virtual void DidNavigateAnyFramePostCommit(
-      const NavigationController::LoadCommittedDetails& details,
-      const ViewHostMsg_FrameNavigate_Params& params) { }
-
-  virtual void DidStartLoading() { }
-  virtual void DidStopLoading() { }
-
-#if 0
-  // For unifying with delegate...
-
-  // Notifies the delegate that this contents is starting or is done loading
-  // some resource. The delegate should use this notification to represent
-  // loading feedback. See TabContents::is_loading()
-  virtual void LoadingStateChanged(TabContents* contents) { }
-  // Called to inform the delegate that the tab content's navigation state
-  // changed. The |changed_flags| indicates the parts of the navigation state
-  // that have been updated, and is any combination of the
-  // |TabContents::InvalidateTypes| bits.
-  virtual void NavigationStateChanged(const TabContents* source,
-                                      unsigned changed_flags) { }
-#endif
-
- protected:
-  TabContentsObserver(TabContents* tab_contents);
-  virtual ~TabContentsObserver();
-
-  // IPC::Channel::Listener implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message);
-
-  // IPC::Message::Sender implementation.
-  virtual bool Send(IPC::Message* message);
-
-  TabContents* tab_contents() { return tab_contents_; }
-  int routing_id() { return routing_id_; }
-
- private:
-  friend class TabContents;
-
-  void set_tab_contents(TabContents* tc) { tab_contents_ = tc; }
-
-  TabContents* tab_contents_;
-  // The routing ID of the associated TabContents.
-  int routing_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(TabContentsObserver);
-};
+// TODO(jam): remove this file when all files have been converted.
+#include "content/browser/tab_contents/tab_contents_observer.h"
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_OBSERVER_H_