Fix debugging module(replace int with intptr_t) so it works on Windows x64.

runtime/bin/dbg_message.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/dbg_connection.h"
 #include "bin/dbg_message.h"
 #include "bin/dartutils.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
@@ skipping 1023 matching lines @@
   dart::TextBuffer msg(32);
   msg.Printf("{ \"id\": %d }", msg_id);
   in_msg->SendReply(&msg);
   return false;
 }
 
 
 void DbgMsgQueue::AddMessage(int32_t cmd_idx,
                              const char* start,
                              const char* end,
-                             int debug_fd) {
+                             intptr_t debug_fd) {
   if ((end > start) && ((end - start) < kMaxInt32)) {
     MonitorLocker ml(&msg_queue_lock_);
     DbgMessage* msg = new DbgMessage(cmd_idx, start, end, debug_fd);
     if (msglist_head_ == NULL) {
       ASSERT(msglist_tail_ == NULL);
       msglist_head_ = msg;
       msglist_tail_ = msg;
       ml.Notify();
     } else {
       ASSERT(msglist_tail_ != NULL);
@@ skipping 173 matching lines @@
     i++;
   }
   return kInvalidCommand;
 }
 
 
 bool DbgMsgQueueList::AddIsolateMessage(Dart_IsolateId isolate_id,
                                         int32_t cmd_idx,
                                         const char* start,
                                         const char* end,
-                                        int debug_fd) {
+                                        intptr_t debug_fd) {
   MutexLocker ml(msg_queue_list_lock_);
   DbgMsgQueue* queue = DbgMsgQueueList::GetIsolateMsgQueueLocked(isolate_id);
   if (queue != NULL) {
     queue->AddMessage(cmd_idx, start, end, debug_fd);
     return true;
   }
   return false;
 }
 
 
@@ skipping 159 matching lines @@
     } else {
       ASSERT(kind == kShutdown);
       RemoveIsolateMsgQueue(isolate_id);
     }
   }
   Dart_ExitScope();
 }
 
 }  // namespace bin
 }  // namespace dart