chromeos: Cleanup comments and DEPS in //ash

ash/wm/workspace/workspace_layout_manager_keyboard_unittest.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/workspace_layout_manager.h"
 
 #include <string>
 #include <utility>
 
 #include "ash/public/cpp/shell_window_ids.h"
@@ skipping 28 matching lines @@
 
 namespace ash {
 namespace {
 
 WorkspaceLayoutManager* GetWorkspaceLayoutManager(WmWindow* container) {
   return static_cast<WorkspaceLayoutManager*>(container->GetLayoutManager());
 }
 
 }  // namespace
 
-// TODO: this is a duplicate of that in ash/common, and should move once
-// keyboard is refactored to work in mash.
 class WorkspaceLayoutManagerKeyboardTest : public AshTest {
  public:
   WorkspaceLayoutManagerKeyboardTest() : layout_manager_(nullptr) {}
   ~WorkspaceLayoutManagerKeyboardTest() override {}
 
   void SetUp() override {
     AshTest::SetUp();
     UpdateDisplay("800x600");
     WmWindow* default_container =
         WmShell::Get()->GetPrimaryRootWindowController()->GetWmContainer(
@@ skipping 135 matching lines @@
   changed_window_bounds.Offset(0, -shift);
   // Window should be shifted up.
   EXPECT_EQ(changed_window_bounds, window->GetBounds());
 
   kb_controller->HideKeyboard(
       keyboard::KeyboardController::HIDE_REASON_AUTOMATIC);
   EXPECT_EQ(orig_window_bounds, window->GetBounds());
 }
 
 }  // namespace ash