Import chrome idl into third_party

third_party/chrome/idl/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);
+  };
+};