Add the implementation skeleton for systeminfo.cpu API

chrome/test/data/extensions/api_test/systeminfo/cpu/test_cpuinfo_api.js

Index: chrome/test/data/extensions/api_test/systeminfo/cpu/test_cpuinfo_api.js
diff --git a/chrome/test/data/extensions/api_test/systeminfo/cpu/test_cpuinfo_api.js b/chrome/test/data/extensions/api_test/systeminfo/cpu/test_cpuinfo_api.js
new file mode 100644
index 0000000000000000000000000000000000000000..fe2bb28069c6dd5c4b44664ddc140c15a606a9e2
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/systeminfo/cpu/test_cpuinfo_api.js
@@ -0,0 +1,19 @@
+// 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.
+
+// systeminfo.cpu api test
+// browser_tests.exe --gtest_filter=SystemInfoCpuApiTest.*
+
+chrome.systemInfo = chrome.experimental.systemInfo;
+
+chrome.test.runTests([
+  function testGet() {
+    chrome.systemInfo.cpu.get(chrome.test.callbackPass(function(result){
+      chrome.test.assertTrue(result.cores.length == 1);
+      var core = result.cores[0];
+      chrome.test.assertTrue(core.load == 53);
+    }));
+  },
+]);
+