Add ability to change display settings to chrome.systemInfo.display

chrome/browser/extensions/api/system_info_display/system_info_display_api.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 "chrome/browser/extensions/api/system_info_display/system_info_display_api.h"
 
+#include "base/memory/scoped_ptr.h"
+#include "chrome/common/extensions/manifest_handlers/kiosk_enabled_info.h"
+
 namespace extensions {
 
 using api::system_info_display::DisplayUnitInfo;
 
+namespace SetDisplayProperties = api::system_info_display::SetDisplayProperties;
+
 bool SystemInfoDisplayGetDisplayInfoFunction::RunImpl() {
   DisplayInfoProvider::GetProvider()->RequestInfo(
       base::Bind(
           &SystemInfoDisplayGetDisplayInfoFunction::OnGetDisplayInfoCompleted,
           this));
   return true;
 }
 
 void SystemInfoDisplayGetDisplayInfoFunction::OnGetDisplayInfoCompleted(
     const DisplayInfo& info, bool success) {
-  if (success)
+  if (success) {
     results_ = api::system_info_display::GetDisplayInfo::Results::Create(info);
-  else
+  } else {
     SetError("Error occurred when querying display information.");
+  }
   SendResponse(success);
 }
 
+bool SystemInfoDisplaySetDisplayPropertiesFunction::RunImpl() {
+#if !defined(OS_CHROMEOS)
+  SetError("Function available only on ChromeOS.");
+  return false;
+#else
+  if (!KioskEnabledInfo::IsKioskEnabled(GetExtension())) {
+    SetError("The extension needs to be kiosk enabled to use the function.");
+    return false;
+  }
+
+  scoped_ptr<SetDisplayProperties::Params> params(
+      SetDisplayProperties::Params::Create(*args_));
+  DisplayInfoProvider::GetProvider()->SetInfo(params->id, params->info,
+      base::Bind(
+          &SystemInfoDisplaySetDisplayPropertiesFunction::OnPropertiesSet,
+          this));
+  return true;
+#endif
+}
+
+void SystemInfoDisplaySetDisplayPropertiesFunction::OnPropertiesSet(
+    bool success, const std::string& error) {
+  if (!success)
+    SetError(error);
+  SendResponse(success);
+}
+
 }  // namespace extensions