Avoid shutdown leak.

mojo/edk/system/raw_channel.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 "mojo/edk/system/raw_channel.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 #include <algorithm>
@@ skipping 708 matching lines @@
     write_buffer_->data_offset_ = 0;
   }
 }
 
 void RawChannel::CallOnReadCompleted(IOResult io_result, size_t bytes_read) {
   base::AutoLock locker(read_lock_);
   OnReadCompletedNoLock(io_result, bytes_read);
 }
 
 void RawChannel::WillDestroyCurrentMessageLoop() {
-  base::AutoLock locker(read_lock_);
-  OnReadCompletedNoLock(IO_FAILED_SHUTDOWN, 0);
+  {
+    base::AutoLock locker(read_lock_);
+    OnReadCompletedNoLock(IO_FAILED_SHUTDOWN, 0);
+  }
+  // The PostTask inside Shutdown() will never be called, so manually call it
+  // here to avoid leaks in LSAN builds.
+  Shutdown();
 }
 
 }  // namespace edk
 }  // namespace mojo