MD Settings: Display: Add unified desktop control and modify api

extensions/browser/api/system_display/system_display_api.cc

 // Copyright 2013 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 "extensions/browser/api/system_display/system_display_api.h"
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 161 matching lines @@
   *error = kKioskOnlyError;
   return false;
 #endif
 }
 
 bool SystemDisplayFunction::ShouldRestrictToKioskAndWebUI() {
   return true;
 }
 
 ExtensionFunction::ResponseAction SystemDisplayGetInfoFunction::Run() {
+  std::unique_ptr<display::GetInfo::Params> params(
+      display::GetInfo::Params::Create(*args_));
+  bool single_unified = params->flags && params->flags->single_unified &&
+                        *params->flags->single_unified;
   DisplayInfoProvider::DisplayUnitInfoList all_displays_info =
-      DisplayInfoProvider::Get()->GetAllDisplaysInfo();
+      DisplayInfoProvider::Get()->GetAllDisplaysInfo(single_unified);
   return RespondNow(
       ArgumentList(display::GetInfo::Results::Create(all_displays_info)));
 }
 
 ExtensionFunction::ResponseAction SystemDisplayGetDisplayLayoutFunction::Run() {
   DisplayInfoProvider::DisplayLayoutList display_layout =
       DisplayInfoProvider::Get()->GetDisplayLayout();
   return RespondNow(
       ArgumentList(display::GetDisplayLayout::Results::Create(display_layout)));
 }
@@ skipping 142 matching lines @@
   std::string error;
   if (DisplayInfoProvider::Get()->IsNativeTouchCalibrationActive(&error))
     return RespondNow(Error(error));
 
   if (!DisplayInfoProvider::Get()->ClearTouchCalibration(params->id, &error))
     return RespondNow(Error(error));
   return RespondNow(NoArguments());
 }
 
 }  // namespace extensions