Ignore fullscreen windows which are behind other windows for fullscreen mode.

ash/wm/workspace_controller.cc

Index: ash/wm/workspace_controller.cc
diff --git a/ash/wm/workspace_controller.cc b/ash/wm/workspace_controller.cc
index 8d378581401f3bc96bfff2a02e09dc97dcd21377..4bf03fd87907050f41d353d1de346173b1a350ce 100644
--- a/ash/wm/workspace_controller.cc
+++ b/ash/wm/workspace_controller.cc
@@ -74,7 +74,7 @@ WorkspaceWindowState WorkspaceController::GetWindowState() const {
       // An untracked window may still be fullscreen so we keep iterating when
       // we hit a maximized window.
       has_maximized_window = true;
-    } else if (window_state->IsFullscreen()) {
+    } else if (window_state->IsFullscreen() && window_state->IsActive()) {

[oshima, 2013/12/03 19:17:52]

Don't we have to check if this is top most?

Window may be top most but not active in multi display environment.

[flackr, 2013/12/03 21:32:58]

Good point, done. This also no longer requires activating fullscreen windows in
the tests :-).

       return WORKSPACE_WINDOW_STATE_FULL_SCREEN;
     }
     if (!window_overlaps_launcher && (*i)->bounds().Intersects(shelf_bounds))