Add GetLiveVars to PPB_Testing_Dev. Fix leaks it uncovered.

ppapi/cpp/dev/var_array_buffer_dev.cc

 // 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.
 
 #include "ppapi/cpp/dev/var_array_buffer_dev.h"
 
 #include "ppapi/c/dev/ppb_var_array_buffer_dev.h"
 #include "ppapi/cpp/logging.h"
 #include "ppapi/cpp/module_impl.h"
 
@@ skipping 14 matching lines @@
   } else {
     PP_NOTREACHED();
     var_ = PP_MakeNull();
   }
 }
 
 VarArrayBuffer_Dev::VarArrayBuffer_Dev(uint32_t size_in_bytes)
     : buffer_(NULL) {
   if (has_interface<PPB_VarArrayBuffer_Dev>()) {
     var_ = get_interface<PPB_VarArrayBuffer_Dev>()->Create(size_in_bytes);
+    needs_release_ = true;
     buffer_ = Map();
   } else {
     PP_NOTREACHED();
     var_ = PP_MakeNull();
   }
 }
 
 uint32_t VarArrayBuffer_Dev::ByteLength() const {
   if (has_interface<PPB_VarArrayBuffer_Dev>()) {
     return get_interface<PPB_VarArrayBuffer_Dev>()->ByteLength(var_);
@@ skipping 12 matching lines @@
     return buffer_;
   if (has_interface<PPB_VarArrayBuffer_Dev>()) {
     buffer_ = get_interface<PPB_VarArrayBuffer_Dev>()->Map(var_);
     return buffer_;
   }
   PP_NOTREACHED();
   return 0;
 }
 
 }  // namespace pp