Removes most aura dependencies from WindowResizer

ash/wm/default_window_resizer.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 ASH_WM_DEFAULT_WINDOW_RESIZER_H_
 #define ASH_WM_DEFAULT_WINDOW_RESIZER_H_
 
 #include "ash/wm/window_resizer.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 
 namespace ash {
+namespace wm {
+class WmGlobals;
+}
 
 // WindowResizer is used by ToplevelWindowEventFilter to handle dragging, moving
 // or resizing a window. All coordinates passed to this are in the parent
 // windows coordiantes.
 class ASH_EXPORT DefaultWindowResizer : public WindowResizer {
  public:
   ~DefaultWindowResizer() override;
 
   // Creates a new DefaultWindowResizer. The caller takes ownership of the
   // returned object.
@@ skipping 10 matching lines @@
   void Drag(const gfx::Point& location, int event_flags) override;
   void CompleteDrag() override;
   void RevertDrag() override;
 
  private:
   explicit DefaultWindowResizer(wm::WindowState* window_state);
 
   // Set to true once Drag() is invoked and the bounds of the window change.
   bool did_move_or_resize_;
 
+  wm::WmGlobals* globals_;
+
   DISALLOW_COPY_AND_ASSIGN(DefaultWindowResizer);
 };
 
 }  // namespace aura
 
 #endif  // ASH_WM_DEFAULT_WINDOW_RESIZER_H_