More windows fixes.

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/dartutils.h"
 #include "bin/fdutils.h"
 #include "bin/socket.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
@@ skipping 207 matching lines @@
   ASSERT(IsValidJSON(msg.buf()));
 }
 
 
 void DebuggerConnectionHandler::BreakpointHandler(Dart_Breakpoint bpt,
                                                   Dart_StackTrace trace) {
   // TODO(hausner): rather than busy-waiting, block on the pipe to the
   // debugger thread and wait until a debugger connection has been
   // established.
   while (!IsConnected()) {
-    printf("Waiting for debugger connection\n");
-    sleep(1);
+    // Busy wait.
   }
   SendBreakpointEvent(bpt, trace);
   HandleMessages();
   if (!msgbuf_->Alive()) {
     CloseDbgConnection();
   }
 }
 
 
 void DebuggerConnectionHandler::AcceptDbgConnection(int debugger_fd) {
@@ skipping 24 matching lines @@
 
   handler_started_ = true;
   DebuggerConnectionImpl::StartHandler(port_number);
   Dart_SetBreakpointHandler(BreakpointHandler);
 }
 
 
 DebuggerConnectionHandler::~DebuggerConnectionHandler() {
   CloseDbgConnection();
 }