Clear memory of broker related structs sent over the new Mojo EDK.

mojo/edk/system/child_broker.cc

 // Copyright 2015 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 "mojo/edk/system/child_broker.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 88 matching lines @@
     sync_channel_lock_.Unlock();
   }
 }
 #endif
 
 void ChildBroker::ConnectMessagePipe(uint64_t pipe_id,
                                      MessagePipeDispatcher* message_pipe) {
   DCHECK(internal::g_io_thread_task_runner->RunsTasksOnCurrentThread());
 
   ConnectMessagePipeMessage data;
+  memset(&data, 0, sizeof(data));
   data.pipe_id = pipe_id;
   if (pending_connects_.find(pipe_id) != pending_connects_.end()) {
     if (!parent_async_channel_) {
       // On Windows, we can't create the local RoutedRawChannel yet because we
       // don't have parent_sync_channel_. Treat all platforms the same and just
       // queue this.
       CHECK(pending_inprocess_connects_.find(pipe_id) ==
             pending_inprocess_connects_.end());
       pending_inprocess_connects_[pipe_id] = message_pipe;
       return;
@@ skipping 208 matching lines @@
   if (WriteAndReadResponse(&message, handles, response_size)) {
     server->reset(PlatformHandle(handles[0]));
     client->reset(PlatformHandle(handles[1]));
   }
 }
 
 #endif
 
 }  // namespace edk
 }  // namespace mojo