Add chrome.power extension API.

chrome/browser/extensions/api/power/power_api.cc

+// Copyright (c) 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 "chrome/browser/extensions/api/power/power_api.h"
+
+#include "chrome/browser/extensions/api/power/power_api_constants.h"
+#include "chrome/browser/extensions/api/power/power_api_manager.h"
+#include "chrome/common/extensions/api/power.h"
+
+namespace extensions {
+
+bool PowerRequestKeepAwakeFunction::RunImpl() {
+  scoped_ptr<api::power::RequestKeepAwake::Params> params(
+      api::power::RequestKeepAwake::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  PowerApiManager::Level level = PowerApiManager::LEVEL_DISPLAY;
+  if (params && params->level &&
+      *(params->level) == power_api_constants::kSystemLevelValue)
+    level = PowerApiManager::LEVEL_SYSTEM;

[not at google - send to devlin, 2013/03/19 21:16:39]

enums get compiled down to real C++ enums, so you could switch(params->level){}
then.

[Daniel Erat, 2013/03/19 23:39:38]

Done (well, not using a switch, but got rid of the constants here).

+
+  PowerApiManager::GetInstance()->AddRequest(extension_id(), level);
+  return true;
+}
+
+bool PowerReleaseKeepAwakeFunction::RunImpl() {
+  PowerApiManager::GetInstance()->RemoveRequest(extension_id());
+  return true;
+}
+
+}  // namespace extensions