Brief white flickering when transitioning from boot splash to Chrome animation

ash/desktop_background/desktop_background_controller.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/desktop_background/desktop_background_controller.h"
 
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/desktop_background/desktop_background_widget_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_factory.h"
@@ skipping 10 matching lines @@
 #include "ui/compositor/layer.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/image/image.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 namespace {
 
 const int kSmallWallpaperMaximalWidth = 1366;
 const int kSmallWallpaperMaximalHeight = 800;
+const SkColor kTransparentColor = SkColorSetARGB(0x00, 0x00, 0x00, 0x00);
 
 internal::RootWindowLayoutManager* GetRootWindowLayoutManager(
     aura::RootWindow* root_window) {
   return static_cast<internal::RootWindowLayoutManager*>(
       root_window->layout_manager());
 }
 }  // namespace
 
 // Stores the current wallpaper data.
 struct DesktopBackgroundController::WallpaperData {
@@ skipping 55 matching lines @@
   const int index_;
 
   const WallpaperResolution resolution_;
 
   DISALLOW_COPY_AND_ASSIGN(WallpaperOperation);
 };
 
 DesktopBackgroundController::DesktopBackgroundController()
     : locked_(false),
       desktop_background_mode_(BACKGROUND_SOLID_COLOR),
-      background_color_(SK_ColorGRAY),
+      background_color_(kTransparentColor),
       weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
   InstallComponentForAllWindows();
 }
 
 DesktopBackgroundController::~DesktopBackgroundController() {
   CancelPendingWallpaperOperation();
 }
 
 gfx::ImageSkia DesktopBackgroundController::GetWallpaper() const {
   if (current_wallpaper_.get())
@@ skipping 231 matching lines @@
                         dst_container);
   }
 }
 
 int DesktopBackgroundController::GetBackgroundContainerId(bool locked) {
   return locked ? internal::kShellWindowId_LockScreenBackgroundContainer :
                   internal::kShellWindowId_DesktopBackgroundContainer;
 }
 
 }  // namespace ash