Get rid of base::SharedMemory::NULLHandle();

ppapi/proxy/media_stream_track_resource_base.cc

 // Copyright 2014 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/proxy/media_stream_track_resource_base.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 52 matching lines @@
     Post(RENDERER, PpapiHostMsg_MediaStreamTrack_Close());
     has_ended_ = true;
   }
 }
 
 void MediaStreamTrackResourceBase::OnPluginMsgInitBuffers(
     const ResourceMessageReplyParams& params,
     int32_t number_of_buffers,
     int32_t buffer_size,
     bool readonly) {
-  base::SharedMemoryHandle shm_handle = base::SharedMemory::NULLHandle();
+  base::SharedMemoryHandle shm_handle;
   params.TakeSharedMemoryHandleAtIndex(0, &shm_handle);
   buffer_manager_.SetBuffers(number_of_buffers, buffer_size,
                              std::unique_ptr<base::SharedMemory>(
                                  new base::SharedMemory(shm_handle, readonly)),
                              false);
 }
 
 void MediaStreamTrackResourceBase::OnPluginMsgEnqueueBuffer(
     const ResourceMessageReplyParams& params,
     int32_t index) {
   buffer_manager_.EnqueueBuffer(index);
 }
 
 void MediaStreamTrackResourceBase::OnPluginMsgEnqueueBuffers(
     const ResourceMessageReplyParams& params,
     const std::vector<int32_t>& indices) {
   for (size_t i = 0; i < indices.size(); ++i)
     buffer_manager_.EnqueueBuffer(indices[i]);
 }
 
 }  // namespace proxy
 }  // namespace ppapi