aura: Add Layer::LAYER_SOLID_COLOR to compositor.

ash/wm/workspace/workspace_layout_manager_unittest.cc

Index: ash/wm/workspace/workspace_layout_manager_unittest.cc
diff --git a/ash/wm/workspace/workspace_layout_manager_unittest.cc b/ash/wm/workspace/workspace_layout_manager_unittest.cc
index ac2504e550f67db3e3a0d2662d92c5edca284380..a353e177973a1a1250b27de06971468e4021e642 100644
--- a/ash/wm/workspace/workspace_layout_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_layout_manager_unittest.cc
@@ -50,7 +50,7 @@ class WorkspaceLayoutManagerTest : public aura::test::AuraTestBase {
                                          aura::client::WindowType type) {
     aura::Window* window = new aura::Window(NULL);
     window->SetType(type);
-    window->Init(ui::Layer::LAYER_HAS_NO_TEXTURE);
+    window->Init(ui::Layer::LAYER_NOT_DRAWN);
     window->SetBounds(bounds);
     window->Show();
     window->SetParent(parent);
@@ -166,7 +166,7 @@ TEST_F(WorkspaceLayoutManagerTest, Popup) {
 TEST_F(WorkspaceLayoutManagerTest, IgnoreTransient) {
   scoped_ptr<aura::Window> window(new aura::Window(NULL));
   window->SetType(aura::client::WINDOW_TYPE_NORMAL);
-  window->Init(ui::Layer::LAYER_HAS_NO_TEXTURE);
+  window->Init(ui::Layer::LAYER_NOT_DRAWN);
   aura::RootWindow::GetInstance()->AddTransientChild(window.get());
   window->SetBounds(gfx::Rect(0, 0, 200, 200));
   window->Show();