Don't try to use compositor to display dialog before compositor is initialized

chrome/browser/ui/views/simple_message_box_views.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/simple_message_box.h"
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/ui/views/constrained_window_views.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/views/controls/message_box_view.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_delegate.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/client/dispatcher_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/root_window.h"
+#if defined(OS_WIN)
+#include "chrome/browser/ui/views/simple_message_box_win.h"
+#endif
 #endif
 
 namespace chrome {
 
 namespace {
 
 // Multiple SimpleMessageBoxViews can show up at the same time. Each of these
 // start a nested message-loop. However, these SimpleMessageBoxViews can be
 // deleted in any order. This creates problems if a box in an inner-loop gets
 // destroyed before a box in an outer-loop. So to avoid this, ref-counting is
@@ skipping 132 matching lines @@
 
 SimpleMessageBoxViews::~SimpleMessageBoxViews() {
 }
 
 }  // namespace
 
 MessageBoxResult ShowMessageBox(gfx::NativeWindow parent,
                                 const string16& title,
                                 const string16& message,
                                 MessageBoxType type) {
+#if defined(USE_AURA) && defined(OS_WIN)
+  // If we're very early, we can't show a GPU-based dialog, so fallback to
+  // plain Windows MessageBox.
+  if (!ui::ContextFactory::GetInstance())
+    return NativeShowMessageBox(NULL, title, message, type);
+#endif
+
   scoped_refptr<SimpleMessageBoxViews> dialog(
       new SimpleMessageBoxViews(title, message, type));
   CreateBrowserModalDialogViews(dialog.get(), parent)->Show();
 
 #if defined(USE_AURA)
   // Use the widget's window itself so that the message loop
   // exists when the dialog is closed by some other means than
   // |Cancel| or |Accept|.
   aura::Window* anchor = parent ?
       parent : dialog->GetWidget()->GetNativeWindow();
   aura::client::GetDispatcherClient(anchor->GetRootWindow())
       ->RunWithDispatcher(dialog.get(), anchor, true);
 #else
   {
     base::MessageLoop::ScopedNestableTaskAllower allow(
         base::MessageLoopForUI::current());
     base::RunLoop run_loop(dialog);
     run_loop.Run();
   }
 #endif
   return dialog->result();
 }
 
 }  // namespace chrome