Move systemInfo.cpu API out out experimental namespace.

chrome/common/extensions/api/experimental_system_info_cpu.idl

-// 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.
-
-// File-level comment to appease parser. Eventually this will not be necessary.
-namespace experimental.systemInfo.cpu {
-
-  dictionary CpuInfo {
-    // The number of logical processors.
-    long numOfProcessors;
-    // The architecture name of the processors.
-    DOMString archName;
-    // The model name of the processors.
-    DOMString modelName;
-  };
-
-  dictionary CpuUpdateInfo {
-    // The average usage percent of all processors, as a number 
-    // between 0 and 100.
-    double averageUsage;
-    // The CPU usage array for each logic processor.
-    double[] usagePerProcessor;
-  };
-
-  callback CpuInfoCallback = void (CpuInfo info);
-  
-  interface Functions {
-    // Get CPU information.
-    static void get(CpuInfoCallback callback);
-  };
-
-  interface Events {
-    // Fired periodically to report CPU history usage information. The default
-    // period interval is 1 seconds.
-    static void onUpdated(CpuUpdateInfo info);
-  };
-};