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

extensions/browser/api/system_display/display_info_provider.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/display_info_provider.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "extensions/common/api/system_display.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
@@ skipping 43 matching lines @@
 api::system_display::DisplayUnitInfo DisplayInfoProvider::CreateDisplayUnitInfo(
     const display::Display& display,
     int64_t primary_display_id) {
   api::system_display::DisplayUnitInfo unit;
   const gfx::Rect& bounds = display.bounds();
   const gfx::Rect& work_area = display.work_area();
   unit.id = base::Int64ToString(display.id());
   unit.is_primary = (display.id() == primary_display_id);
   unit.is_internal = display.IsInternal();
   unit.is_enabled = true;
+  unit.is_unified = false;
   unit.rotation = RotationToDegrees(display.rotation());
   unit.bounds.left = bounds.x();
   unit.bounds.top = bounds.y();
   unit.bounds.width = bounds.width();
   unit.bounds.height = bounds.height();
   unit.work_area.left = work_area.x();
   unit.work_area.top = work_area.y();
   unit.work_area.width = work_area.width();
   unit.work_area.height = work_area.height();
   unit.has_touch_support =
       display.touch_support() == display::Display::TOUCH_SUPPORT_AVAILABLE;
   return unit;
 }
 
 bool DisplayInfoProvider::SetDisplayLayout(const DisplayLayoutList& layout) {
   NOTREACHED();  // Implemented on Chrome OS only in override.
   return false;
 }
 
 void DisplayInfoProvider::EnableUnifiedDesktop(bool enable) {}
 
 DisplayInfoProvider::DisplayUnitInfoList
-DisplayInfoProvider::GetAllDisplaysInfo() {
+DisplayInfoProvider::GetAllDisplaysInfo(bool /* single_unified*/) {
   display::Screen* screen = display::Screen::GetScreen();
   int64_t primary_id = screen->GetPrimaryDisplay().id();
   std::vector<display::Display> displays = screen->GetAllDisplays();
   DisplayUnitInfoList all_displays;
   for (const display::Display& display : displays) {
     api::system_display::DisplayUnitInfo unit =
         CreateDisplayUnitInfo(display, primary_id);
     UpdateDisplayUnitInfoForPlatform(display, &unit);
     all_displays.push_back(std::move(unit));
   }
@@ skipping 53 matching lines @@
 
 bool DisplayInfoProvider::IsNativeTouchCalibrationActive(std::string* error) {
   NOTREACHED();  // Implemented on Chrome OS only in override.
   return true;
 }
 
 DisplayInfoProvider::DisplayInfoProvider() {
 }
 
 }  // namespace extensions