Move TabStripModelDelegate off Browser into its own class.

chrome/browser/ui/views/tabs/tab_drag_controller.cc

 // 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.
 
 #include "chrome/browser/ui/views/tabs/tab_drag_controller.h"
 
 #include <math.h>
 #include <set>
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_creator.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/browser/ui/tabs/tab_strip_model_delegate.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/tabs/base_tab.h"
 #include "chrome/browser/ui/views/tabs/browser_tab_strip_controller.h"
 #include "chrome/browser/ui/views/tabs/dragged_tab_view.h"
 #include "chrome/browser/ui/views/tabs/native_view_photobooth.h"
 #include "chrome/browser/ui/views/tabs/tab.h"
 #include "chrome/browser/ui/views/tabs/tab_strip.h"
 #include "chrome/browser/ui/views/tabs/touch_tab_strip_layout.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 1881 matching lines @@
     gfx::Point touch_point;
     bool got_touch_point = widget_window->GetRootWindow()->
         gesture_recognizer()->GetLastTouchPointForTarget(widget_window,
                                                          &touch_point);
     DCHECK(got_touch_point);
     return touch_point;
   }
 #endif
   return gfx::Screen::GetCursorScreenPoint();
 }