chromeos: Turn off displays on suspend

ui/display/chromeos/test/test_native_display_delegate.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/display/chromeos/test/test_native_display_delegate.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/display/chromeos/test/action_logger.h"
 #include "ui/display/types/display_mode.h"
@@ skipping 42 matching lines @@
 }
 
 void TestNativeDisplayDelegate::SetBackgroundColor(uint32_t color_argb) {
   log_->AppendAction(GetBackgroundAction(color_argb));
 }
 
 void TestNativeDisplayDelegate::ForceDPMSOn() {
   log_->AppendAction(kForceDPMS);
 }
 
+void TestNativeDisplayDelegate::GetCachedDisplays(
+    const GetDisplaysCallback& callback) {
+  callback.Run(outputs_);
+}
+
 void TestNativeDisplayDelegate::GetDisplays(
     const GetDisplaysCallback& callback) {
   if (run_async_) {
     base::MessageLoop::current()->PostTask(FROM_HERE,
                                            base::Bind(callback, outputs_));
   } else {
     callback.Run(outputs_);
   }
 }
 
@@ skipping 73 matching lines @@
 
 void TestNativeDisplayDelegate::AddObserver(NativeDisplayObserver* observer) {
 }
 
 void TestNativeDisplayDelegate::RemoveObserver(
     NativeDisplayObserver* observer) {
 }
 
 }  // namespace test
 }  // namespace ui