Enable warning 4389 as an error on windows builds. This will make...

chrome/app/chrome_dll_main.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
 // TODO(port): the ifdefs in here are a first step towards trying to determine
 // the correct abstraction for all the OS functionality required at this
 // stage of process initialization. It should not be taken as a final
 // abstraction.
 
 #include "build/build_config.h"
 
@@ skipping 505 matching lines @@
   }
 
   base::ProcessId browser_pid = base::GetCurrentProcId();
   if (SubprocessIsBrowserChild(process_type)) {
 #if defined(OS_WIN)
     std::wstring channel_name =
       parsed_command_line.GetSwitchValue(switches::kProcessChannelID);
 
     browser_pid =
         static_cast<base::ProcessId>(StringToInt(WideToASCII(channel_name)));
-    DCHECK_NE(browser_pid, 0);
+    DCHECK_NE(browser_pid, 0u);
 #else
     browser_pid = base::GetCurrentProcId();
 #endif
 
 #if defined(OS_POSIX)
     // When you hit Ctrl-C in a terminal running the browser
     // process, a SIGINT is delivered to the entire process group.
     // When debugging the browser process via gdb, gdb catches the
     // SIGINT for the browser process (and dumps you back to the gdb
     // console) but doesn't for the child processes, killing them.
@@ skipping 307 matching lines @@
 
   logging::CleanupChromeLogging();
 
 #if defined(OS_MACOSX) && defined(GOOGLE_CHROME_BUILD)
   // TODO(mark): See the TODO(mark) above at InitCrashReporter.
   DestructCrashReporter();
 #endif  // OS_MACOSX && GOOGLE_CHROME_BUILD
 
   return rv;
 }