Disabled the Windows error dialog for the GPU process.

Rather than displaying a modal dialog, LoadLibrary and similar return an error. This allows the GPU process to fail or fall back without interacting with the user.

TEST=try
BUG=69610

Review URL: http://codereview.chromium.org/6271006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71736 0039d316-1c4b-4281-b951-d872f2087c98

chrome/gpu/gpu_main.cc

@@ -4,6 +4,10 @@
 
 #include <stdlib.h>
 
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
 #include "app/win/scoped_com_initializer.h"
 #include "base/environment.h"
 #include "base/message_loop.h"
@@ -51,6 +55,13 @@ int GpuMain(const MainFunctionParams& parameters) {
   MessageLoop main_message_loop(MessageLoop::TYPE_UI);
   base::PlatformThread::SetName("CrGpuMain");
 
+#if defined(OS_WIN)
+  // Prevent Windows from displaying a modal dialog on failures like not being
+  // able to load a DLL.
+  SetErrorMode(
+      SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX | SEM_NOOPENFILEERRORBOX);
+#endif
+
   app::win::ScopedCOMInitializer com_initializer;
 
 #if defined(USE_X11)