Move definition of trace_debug_protocol to dbg_connection.cc as this file is also linked into libvm…

runtime/bin/dbg_connection.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/lockers.h"
 #include "bin/log.h"
 #include "bin/socket.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
 #include "platform/globals.h"
 #include "platform/json.h"
 #include "platform/utils.h"
 
 #include "include/dart_api.h"
 
 
 namespace dart {
 namespace bin {
 
-extern bool trace_debug_protocol;
+bool trace_debug_protocol = false;
 
 intptr_t DebuggerConnectionHandler::listener_fd_ = -1;
 Monitor* DebuggerConnectionHandler::handler_lock_ = new Monitor();
 
 // TODO(asiva): Remove this once we have support for multiple debugger
 // connections. For now we just store the single debugger connection
 // handler in a static variable.
 static DebuggerConnectionHandler* singleton_handler = NULL;
 
 // The maximum message length to print when --trace_debug_protocol is
@@ skipping 472 matching lines @@
 
 
 bool DebuggerConnectionHandler::IsConnected() {
   // TODO(asiva): Support multiple debugger connections.
   // Return true if a connection has been established.
   return singleton_handler != NULL;
 }
 
 }  // namespace bin
 }  // namespace dart