Don't create mirror window during bootstrap

ash/display/mirror_window_controller.cc

 // Copyright (c) 2013 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 "ash/display/mirror_window_controller.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 
 // Xlib.h defines RootWindow.
 #undef RootWindow
 #endif
 
+#include "ash/display/display_controller.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/root_window_transformers.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/shell.h"
 #include "base/strings/stringprintf.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/root_window_transformer.h"
@@ skipping 124 matching lines @@
       cursor_window_(NULL),
       cursor_window_delegate_(new CursorWindowDelegate) {
 }
 
 MirrorWindowController::~MirrorWindowController() {
   // Make sure the root window gets deleted before cursor_window_delegate.
   Close();
 }
 
 void MirrorWindowController::UpdateWindow(const DisplayInfo& display_info) {
+  if (Shell::GetInstance()->display_controller()->in_bootstrap())
+    return;
+
   static int mirror_root_window_count = 0;
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   if (!root_window_.get()) {
     const gfx::Rect& bounds_in_pixel = display_info.bounds_in_pixel();
     aura::RootWindow::CreateParams params(bounds_in_pixel);
     params.host = Shell::GetInstance()->root_window_host_factory()->
         CreateRootWindowHost(bounds_in_pixel);
     root_window_.reset(new aura::RootWindow(params));
     root_window_->SetName(
@@ skipping 163 matching lines @@
       Shell::GetScreen()->GetPrimaryDisplay().id());
   DCHECK(display_manager->mirrored_display().is_valid());
   return scoped_ptr<aura::RootWindowTransformer>(
       internal::CreateRootWindowTransformerForMirroredDisplay(
           source_display_info,
           mirror_display_info));
 }
 
 }  // namespace internal
 }  // namespace ash