[Chrome OS ECHO]: Rename API and method names

chrome/browser/chromeos/extensions/echo_private_api.cc

Index: chrome/browser/chromeos/extensions/echo_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/echo_private_api.cc b/chrome/browser/chromeos/extensions/echo_private_api.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a48c704b25e081ae092f24c6993930717c43c6ad
--- /dev/null
+++ b/chrome/browser/chromeos/extensions/echo_private_api.cc
@@ -0,0 +1,49 @@
+// 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/chromeos/extensions/echo_private_api.h"
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/system/statistics_provider.h"
+#include "chrome/common/extensions/extension.h"
+
+namespace {
+
+// For a given registration code type, returns the code value from the
+// underlying system. Caller owns the returned pointer.
+base::Value* GetValueForRegistrationCodeType(std::string& type) {
+  // Possible ECHO code type and corresponding key name in StatisticsProvider.
+  const std::string kCouponType = "COUPON_CODE";
+  const std::string kCouponCodeKey = "ubind_attribute";
+  const std::string kGroupType = "GROUP_CODE";
+  const std::string kGroupCodeKey = "gbind_attribute";
+
+  chromeos::system::StatisticsProvider* provider =
+      chromeos::system::StatisticsProvider::GetInstance();
+  std::string result;
+  if (type == kCouponType)
+    provider->GetMachineStatistic(kCouponCodeKey, &result);
+  else if (type == kGroupType)
+    provider->GetMachineStatistic(kGroupCodeKey, &result);
+  return Value::CreateStringValue(result);
+}
+
+}  // namespace
+
+
+GetRegistrationCodeFunction::GetRegistrationCodeFunction() {
+}
+
+GetRegistrationCodeFunction::~GetRegistrationCodeFunction() {
+}
+
+bool GetRegistrationCodeFunction::RunImpl() {
+  std::string type;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &type));
+  result_.reset(GetValueForRegistrationCodeType(type));
+  return true;
+}