Add workspace to desktop

ui/aura_shell/workspace/workspace_manager_unittest.cc

Index: ui/aura_shell/workspace/workspace_manager_unittest.cc
diff --git a/ui/aura_shell/workspace/workspace_manager_unittest.cc b/ui/aura_shell/workspace/workspace_manager_unittest.cc
index e7ea6f2e07d896b2f35b03aef83eb8bec425f9e4..07164a03eca78c2a90ff04864a89fa9a307e70a6 100644
--- a/ui/aura_shell/workspace/workspace_manager_unittest.cc
+++ b/ui/aura_shell/workspace/workspace_manager_unittest.cc
@@ -30,7 +30,8 @@ class WorkspaceManagerTest : public WorkspaceManagerTestBase {
 };
 
 TEST_F(WorkspaceManagerTest, WorkspaceManagerBaic) {
-  WorkspaceManager manager;
+  scoped_ptr<aura::Window> viewport(CreateTestWindow());
+  WorkspaceManager manager(viewport.get());
   scoped_ptr<Window> w1(CreateTestWindow());
   scoped_ptr<Window> w2(CreateTestWindow());
 
@@ -55,12 +56,14 @@ TEST_F(WorkspaceManagerTest, WorkspaceManagerBaic) {
 }
 
 TEST_F(WorkspaceManagerTest, WorkspaceManagerLayout) {
-  WorkspaceManager manager;
+  scoped_ptr<aura::Window> viewport(CreateTestWindow());
+  WorkspaceManager manager(viewport.get());
   manager.set_workspace_size(gfx::Size(100, 100));
   EXPECT_EQ(0, manager.GetTotalWidth());
 
   Workspace* ws1 = manager.CreateWorkspace();
   manager.Layout();
+
   // ws1 is laied out in left most position.
   EXPECT_EQ(100, manager.GetTotalWidth());
   EXPECT_EQ("0,0 100x100", ws1->bounds().ToString());
@@ -68,6 +71,7 @@ TEST_F(WorkspaceManagerTest, WorkspaceManagerLayout) {
   // ws2 is laied out next to ws1, with 50 margin.
   Workspace* ws2 = manager.CreateWorkspace();
   manager.Layout();
+
   EXPECT_EQ(250, manager.GetTotalWidth());
   EXPECT_EQ("0,0 100x100", ws1->bounds().ToString());
   EXPECT_EQ("150,0 100x100", ws2->bounds().ToString());
@@ -96,7 +100,8 @@ class WorkspaceTest : public WorkspaceManagerTestBase {
 };
 
 TEST_F(WorkspaceTest, WorkspaceBasic) {
-  WorkspaceManager manager;
+  scoped_ptr<aura::Window> viewport(CreateTestWindow());
+  WorkspaceManager manager(viewport.get());
 
   Workspace* ws = manager.CreateWorkspace();
   // Sanity check