Add a temporary CHECK to IPC::Channel::Send() to help track down crash.

ipc/ipc_channel_win.cc

 // Copyright (c) 2012 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 "ipc/ipc_channel_win.h"
 
 #include <windows.h>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 63 matching lines @@
   }
 
   while (!output_queue_.empty()) {
     Message* m = output_queue_.front();
     output_queue_.pop();
     delete m;
   }
 }
 
 bool Channel::ChannelImpl::Send(Message* message) {
+  CHECK(message) << "crbug.com/357915";  // TODO(vtl): Remove once bug resolved.

[no sievers, 2014/03/29 20:48:40]

I think we need more sanity checking on the message here.
At least message->header().

   DCHECK(thread_check_->CalledOnValidThread());
   DVLOG(2) << "sending message @" << message << " on channel @" << this
            << " with type " << message->type()
            << " (" << output_queue_.size() << " in queue)";
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
   Logging::GetInstance()->OnSendMessage(message, "");
 #endif
 
   message->TraceMessageBegin();
@@ skipping 415 matching lines @@
   int secret;
   do {  // Guarantee we get a non-zero value.
     secret = base::RandInt(0, std::numeric_limits<int>::max());
   } while (secret == 0);
 
   id.append(GenerateUniqueRandomChannelID());
   return id.append(base::StringPrintf("\\%d", secret));
 }
 
 }  // namespace IPC