chromeos: Turn off displays on suspend

ui/ozone/common/native_display_delegate_ozone.cc

 // Copyright 2014 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 "ui/ozone/common/native_display_delegate_ozone.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "ui/ozone/common/display_snapshot_proxy.h"
 #include "ui/ozone/common/display_util.h"
@@ skipping 39 matching lines @@
 }
 
 void NativeDisplayDelegateOzone::SetBackgroundColor(uint32_t color_argb) {
   NOTIMPLEMENTED();
 }
 
 void NativeDisplayDelegateOzone::ForceDPMSOn() {
   NOTIMPLEMENTED();
 }
 
-void NativeDisplayDelegateOzone::GetDisplays(
+void NativeDisplayDelegateOzone::GetCachedDisplays(
     const GetDisplaysCallback& callback) {
   std::vector<DisplaySnapshot*> displays;
   for (const auto& display : displays_)
     displays.push_back(display.get());
   callback.Run(displays);
 }
 
+void NativeDisplayDelegateOzone::GetDisplays(
+    const GetDisplaysCallback& callback) {
+  GetCachedDisplays(callback);
+}
+
 void NativeDisplayDelegateOzone::AddMode(const ui::DisplaySnapshot& output,
                                          const ui::DisplayMode* mode) {
   NOTIMPLEMENTED();
 }
 
 void NativeDisplayDelegateOzone::Configure(const ui::DisplaySnapshot& output,
                                            const ui::DisplayMode* mode,
                                            const gfx::Point& origin,
                                            const ConfigureCallback& callback) {
   NOTIMPLEMENTED();
@@ skipping 45 matching lines @@
 void NativeDisplayDelegateOzone::AddObserver(NativeDisplayObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 void NativeDisplayDelegateOzone::RemoveObserver(
     NativeDisplayObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace ui