Prepare a bunch of ash tests for workspace2. With Workspace2 you can't

ash/wm/workspace/workspace_window_resizer_unittest.cc

Index: ash/wm/workspace/workspace_window_resizer_unittest.cc
diff --git a/ash/wm/workspace/workspace_window_resizer_unittest.cc b/ash/wm/workspace/workspace_window_resizer_unittest.cc
index 017c459ac20c40a42cdd2ad88e1b4f336634a655..e5164cc6ce6192bc77d3cece0b9da3f2fdbc3a26 100644
--- a/ash/wm/workspace/workspace_window_resizer_unittest.cc
+++ b/ash/wm/workspace/workspace_window_resizer_unittest.cc
@@ -57,28 +57,25 @@ class WorkspaceWindowResizerTest : public test::AshTestBase {
     aura::RootWindow* root = Shell::GetPrimaryRootWindow();
     root->SetHostSize(gfx::Size(800, kRootHeight));
 
-    aura::Window* default_container =
-        Shell::GetContainer(root, kShellWindowId_DefaultContainer);
-
     gfx::Rect root_bounds(root->bounds());
     EXPECT_EQ(kRootHeight, root_bounds.height());
     Shell::GetInstance()->SetDisplayWorkAreaInsets(root, gfx::Insets());
     window_.reset(new aura::Window(&delegate_));
     window_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window_->Init(ui::LAYER_NOT_DRAWN);
-    window_->SetParent(default_container);
+    window_->SetParent(NULL);
     window_->set_id(1);
 
     window2_.reset(new aura::Window(&delegate2_));
     window2_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window2_->Init(ui::LAYER_NOT_DRAWN);
-    window2_->SetParent(default_container);
+    window2_->SetParent(NULL);
     window2_->set_id(2);
 
     window3_.reset(new aura::Window(&delegate3_));
     window3_->SetType(aura::client::WINDOW_TYPE_NORMAL);
     window3_->Init(ui::LAYER_NOT_DRAWN);
-    window3_->SetParent(default_container);
+    window3_->SetParent(NULL);
     window3_->set_id(3);
   }