Minimize black screen during the boot with multi displays

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/focus_manager_factory.h"
@@ skipping 85 matching lines @@
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_frame_view.h"
 
 #if !defined(OS_MACOSX)
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_filter.h"
 #include "ash/accelerators/nested_dispatcher_controller.h"
 #endif
 
 #if defined(OS_CHROMEOS)
+#include "ash/ash_constants.h"
 #include "ash/display/display_change_observer_x11.h"
 #include "ash/display/output_configurator_animation.h"
 #include "base/chromeos/chromeos_version.h"
 #include "base/message_pump_aurax11.h"
 #include "chromeos/display/output_configurator.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/common/gpu_feature_type.h"
 #endif  // defined(OS_CHROMEOS)
 
 namespace ash {
@@ skipping 90 matching lines @@
   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 #if defined(OS_CHROMEOS)
   content::GpuFeatureType blacklisted_features =
       content::GpuDataManager::GetInstance()->GetBlacklistedFeatures();
   bool is_panel_fitting_disabled =
       (blacklisted_features & content::GPU_FEATURE_TYPE_PANEL_FITTING) ||
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAshDisablePanelFitting);
-  output_configurator_->Init(!is_panel_fitting_disabled);
+
+  output_configurator_->Init(
+      !is_panel_fitting_disabled,
+      delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 
   output_configurator_->AddObserver(output_configurator_animation_.get());
   base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(
       output_configurator());
 #endif  // defined(OS_CHROMEOS)
   AddPreTargetHandler(this);
 }
 
 Shell::~Shell() {
   views::FocusManagerFactory::Install(NULL);
@@ skipping 694 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     active_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash