Adds WmWindow and converts WindowState to use it

ash/wm/workspace/multi_window_resize_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 "ash/wm/workspace/multi_window_resize_controller.h"
 
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/window_animations.h"
+#include "ash/wm/window_state_aura.h"
 #include "ash/wm/workspace/workspace_event_handler.h"
 #include "ash/wm/workspace/workspace_window_resizer.h"
 #include "grit/ash_resources.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event_targeter.h"
@@ skipping 415 matching lines @@
   windows.push_back(windows_.window2);
   DCHECK(windows_.other_windows.empty());
   FindWindowsTouching(windows_.window2, windows_.direction,
                       &windows_.other_windows);
   for (size_t i = 0; i < windows_.other_windows.size(); ++i) {
     windows_.other_windows[i]->AddObserver(this);
     windows.push_back(windows_.other_windows[i]);
   }
   int component = windows_.direction == LEFT_RIGHT ? HTRIGHT : HTBOTTOM;
   wm::WindowState* window_state = wm::GetWindowState(windows_.window1);
-  window_state->CreateDragDetails(windows_.window1,
-                                  location_in_parent,
-                                  component,
+  window_state->CreateDragDetails(location_in_parent, component,
                                   aura::client::WINDOW_MOVE_SOURCE_MOUSE);
   window_resizer_.reset(WorkspaceWindowResizer::Create(window_state, windows));
 
   // Do not hide the resize widget while a drag is active.
   mouse_watcher_.reset();
 }
 
 void MultiWindowResizeController::Resize(const gfx::Point& location_in_screen,
                                          int event_flags) {
   gfx::Point location_in_parent(location_in_screen);
@@ skipping 115 matching lines @@
 bool MultiWindowResizeController::IsOverComponent(
     aura::Window* window,
     const gfx::Point& location_in_screen,
     int component) const {
   gfx::Point window_loc(location_in_screen);
   ::wm::ConvertPointFromScreen(window, &window_loc);
   return window->delegate()->GetNonClientComponent(window_loc) == component;
 }
 
 }  // namespace ash