Add GetLiveVars to PPB_Testing_Dev. Fix leaks it uncovered.

ppapi/api/dev/ppb_testing_dev.idl

 /* Copyright (c) 2011 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.
  */
 
 /**
  * This file contains interface functions used for unit testing. Do not use in
  * production code. They are not guaranteed to be available in normal plugin
  * environments so you should not depend on them.
  */
 
 label Chrome {
   M14 = 0.7,
   M15 = 0.8,
-  M17 = 0.9
+  M17 = 0.9,
+  M18 = 0.91
 };
 
 interface PPB_Testing_Dev {
   /**
    * Reads the bitmap data out of the backing store for the given
    * DeviceContext2D and into the given image. If the data was successfully
    * read, it will return PP_TRUE.
    *
    * This function should not generally be necessary for normal plugin
    * operation. If you want to update portions of a device, the expectation is
@@ skipping 81 matching lines @@
   /**
    * Returns the URL for the document. This is a safe way to retrieve
    * window.location.href.
    * If the canonicalized URL is valid, the method will parse the URL
    * and fill in the components structure. This pointer may be NULL
    * to specify that no component information is necessary.
    */
   [version=0.9]
   PP_Var GetDocumentURL([in] PP_Instance instance,
                         [out] PP_URLComponents_Dev components);
+
+  /**
+   * Fetches up to |array_size| active PP_Vars in the tracker. Returns the
+   * number of vars in the tracker. The active vars are written to |live_vars|
+   * contiguously starting at index 0. The vars are not in any particular order.
+   * If the number of live vars is greater than |array_size|, then an arbitrary
+   * subset of |array_size| vars is written to |live_vars|. The reference count
+   * of the returned PP_Vars will *not* be affected by this call.
+   */
+  [version=0.91]
+  uint32_t GetLiveVars([size_as=array_size] PP_Var[] live_vars,
+                       [in] uint32_t array_size);
 };