aura: Add Layer::LAYER_SOLID_COLOR to compositor.

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 "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_filter.h"
@@ skipping 251 matching lines @@
 
   aura::RootWindow* root_window = aura::RootWindow::GetInstance();
   root_window->SetCursor(aura::kCursorPointer);
 
   activation_controller_.reset(new internal::ActivationController);
 
   aura::Window::Windows containers;
   CreateSpecialContainers(&containers);
   aura::Window::Windows::const_iterator i;
   for (i = containers.begin(); i != containers.end(); ++i) {
-    (*i)->Init(ui::Layer::LAYER_HAS_NO_TEXTURE);
+    (*i)->Init(ui::Layer::LAYER_NOT_DRAWN);
     root_window->AddChild(*i);
     if ((*i)->id() != internal::kShellWindowId_UnparentedControlContainer)
       (*i)->Show();
   }
 
   stacking_controller_.reset(new internal::StackingController);
 
   root_window_layout_ = new internal::RootWindowLayoutManager(root_window);
   root_window->SetLayoutManager(root_window_layout_);
 
@@ skipping 228 matching lines @@
 
   // Create the desktop background image.
   root_window_layout_->SetBackgroundWidget(internal::CreateDesktopBackground());
 }
 
 void Shell::ResetLayoutManager(int container_id) {
   GetContainer(container_id)->SetLayoutManager(NULL);
 }
 
 }  // namespace ash