Moves WorkspaceController to ash/common

ash/common/root_window_controller_common.cc

 // Copyright 2016 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/root_window_controller_common.h"
 
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/root_window_layout_manager.h"
+#include "ash/common/wm/workspace/workspace_layout_manager.h"
+#include "ash/common/wm/workspace_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "base/memory/ptr_util.h"
 
 namespace ash {
 namespace {
 
 // Creates a new window for use as a container.
 WmWindow* CreateContainer(int window_id, const char* name, WmWindow* parent) {
   WmWindow* window = WmShell::Get()->NewContainerWindow();
@@ skipping 186 matching lines @@
       WmWindow::BoundsInScreenBehavior::USE_SCREEN_COORDINATES);
 #endif
 
   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
                   "PowerButtonAnimationContainer", root_);
 }
 
 void RootWindowControllerCommon::CreateLayoutManagers() {
   root_window_layout_ = new wm::RootWindowLayoutManager(root_);
   root_->SetLayoutManager(base::WrapUnique(root_window_layout_));
+
+  WmWindow* default_container =
+      root_->GetChildByShellWindowId(kShellWindowId_DefaultContainer);
+  workspace_controller_.reset(new WorkspaceController(default_container));
+}
+
+void RootWindowControllerCommon::DeleteWorkspaceController() {
+  workspace_controller_.reset();
 }
 
 }  // namespace ash