Moves WmWindow::GetInternalWidget() into a standalone function

ash/common/accelerators/debug_commands.cc

 // Copyright 2013 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/common/accelerators/debug_commands.h"
 
 #include "ash/common/accelerators/accelerator_commands.h"
 #include "ash/common/ash_switches.h"
 #include "ash/common/shell_delegate.h"
 #include "ash/common/system/toast/toast_data.h"
 #include "ash/common/system/toast/toast_manager.h"
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wallpaper/wallpaper_delegate.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
+#include "ash/wm/widget_finder.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/compositor/debug_utils.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image_skia.h"
@@ skipping 12 matching lines @@
       ui::PrintLayerHierarchy(
           layer,
           RootWindowController::ForWindow(root)->GetLastMouseLocationInRoot());
   }
 }
 
 void HandlePrintViewHierarchy() {
   aura::Window* active_window = wm::GetActiveWindow();
   if (!active_window)
     return;
-  views::Widget* widget = WmWindow::Get(active_window)->GetInternalWidget();
+  views::Widget* widget = GetInternalWidgetForWindow(active_window);
   if (!widget)
     return;
   views::PrintViewHierarchy(widget->GetRootView());
 }
 
 void PrintWindowHierarchy(const aura::Window* active_window,
                           aura::Window* window,
                           int indent,
                           std::ostringstream* out) {
   std::string indent_str(indent, ' ');
@@ skipping 149 matching lines @@
     case DEBUG_TRIGGER_CRASH:
       HandleTriggerCrash();
       break;
     default:
       break;
   }
 }
 
 }  // namespace debug
 }  // namespace ash