Use active window if on current workspace for fullscreen mode.

ash/shelf/shelf_layout_manager_unittest.cc

Index: ash/shelf/shelf_layout_manager_unittest.cc
diff --git a/ash/shelf/shelf_layout_manager_unittest.cc b/ash/shelf/shelf_layout_manager_unittest.cc
index 968d036631ff63bee23b6068a16e2d47477813f4..fe2aa419e6ecd90067bc3f00dd1c1a23261453de 100644
--- a/ash/shelf/shelf_layout_manager_unittest.cc
+++ b/ash/shelf/shelf_layout_manager_unittest.cc
@@ -1309,7 +1309,7 @@ TEST_F(ShelfLayoutManagerTest, OpenAppListWithShelfHiddenState) {
   window->SetBounds(gfx::Rect(0, 0, 100, 100));
   window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
   window->Show();
-  wm::ActivateWindow(window);
+  wm::GetWindowState(window)->Activate();
 
   // App list and shelf is not shown.
   EXPECT_FALSE(shell->GetAppListTargetVisibility());
@@ -1370,6 +1370,7 @@ TEST_F(ShelfLayoutManagerTest, FullscreenWindowOnSecondDisplay) {
       display_manager->GetDisplayAt(0));
   window1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
   window1->Show();
+  wm::GetWindowState(window1)->Activate();

[oshima, 2014/02/14 17:24:26]

Does this mean that when we create a single window without activation, it's not
active? 

[flackr, 2014/02/14 20:00:02]

Correct. This may be to prevent stealing input focus in case you are midway
through typing a password or something, but I can verify.

[oshima, 2014/02/14 20:09:30]

We probably should investigate what's the ideal behavior for this case. (outside
of the scope of this CL)

 
   aura::Window* window2 = CreateTestWindow();
   window2->SetBoundsInScreen(