Remove DisplayChangeObserver ash dependencies.

ash/display/window_tree_host_manager.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/display/window_tree_host_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <map>
 #include <memory>
@@ skipping 11 matching lines @@
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/magnifier/partial_magnification_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/root_window_settings.h"
 #include "ash/shell.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "grit/ash_strings.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_property.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/ime/input_method_factory.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 790 matching lines @@
     ui::ClearX11DefaultRootWindow();
 #endif
 }
 
 #if defined(OS_CHROMEOS)
 ui::DisplayConfigurator* WindowTreeHostManager::display_configurator() {
   return Shell::GetInstance()->display_configurator();
 }
 #endif
 
-std::string WindowTreeHostManager::GetInternalDisplayNameString() {
-  return l10n_util::GetStringUTF8(IDS_ASH_INTERNAL_DISPLAY_NAME);
-}
-
-std::string WindowTreeHostManager::GetUnknownDisplayNameString() {
-  return l10n_util::GetStringUTF8(IDS_ASH_STATUS_TRAY_UNKNOWN_DISPLAY_NAME);
-}
-
 ui::EventDispatchDetails WindowTreeHostManager::DispatchKeyEventPostIME(
     ui::KeyEvent* event) {
   // Getting the active root window to dispatch the event. This isn't
   // significant as the event will be sent to the window resolved by
   // aura::client::FocusClient which is FocusController in ash.
   aura::Window* active_window = wm::GetActiveWindow();
   aura::Window* root_window = active_window ? active_window->GetRootWindow()
                                             : Shell::GetPrimaryRootWindow();
   return root_window->GetHost()->DispatchKeyEventPostIME(event);
 }
@@ skipping 37 matching lines @@
   SetDisplayPropertiesOnHost(ash_host, display);
 
 #if defined(OS_CHROMEOS)
   if (switches::ConstrainPointerToRoot())
     ash_host->ConfineCursorToRootWindow();
 #endif
   return ash_host;
 }
 
 }  // namespace ash