Decompose //extensions/browser/BUILD.gn

extensions/browser/api/bluetooth_socket/bluetooth_socket_api.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 "extensions/browser/api/bluetooth_socket/bluetooth_socket_api.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "content/public/browser/browser_context.h"
@@ skipping 588 matching lines @@
 }
 
 void BluetoothSocketSendFunction::AsyncWorkStart() {
   DCHECK_CURRENTLY_ON(work_thread_id());
   BluetoothApiSocket* socket = GetSocket(params_->socket_id);
   if (!socket) {
     error_ = kSocketNotFoundError;
     return;
   }
 
-  socket->Send(io_buffer_,
-               io_buffer_size_,
+  socket->Send(io_buffer_, static_cast<int>(io_buffer_size_),

[Devlin, 2016/09/13 17:10:49]

?  This seems orthogonal to this CL.

[Rahul Chaturvedi, 2016/09/13 20:33:49]

So these are actually real build errors - which for some reason were not showing
up earlier. Doing this build change seems to have, fixed?, the compiler on Win64
and these start breaking.

There are several of these changes over the code, fixing implicit conversions to
int from size_t.

                base::Bind(&BluetoothSocketSendFunction::OnSuccess, this),
                base::Bind(&BluetoothSocketSendFunction::OnError, this));
 }
 
 void BluetoothSocketSendFunction::OnSuccess(int bytes_sent) {
   DCHECK_CURRENTLY_ON(work_thread_id());
   results_ = bluetooth_socket::Send::Results::Create(bytes_sent);
   AsyncWorkCompleted();
 }
 
@@ skipping 41 matching lines @@
       if (socket) {
         socket_infos.push_back(CreateSocketInfo(socket_id, socket));
       }
     }
   }
   results_ = bluetooth_socket::GetSockets::Results::Create(socket_infos);
 }
 
 }  // namespace api
 }  // namespace extensions