Code review comment for lp:~unity-team/unity/unity.fix-noblur

One thing, the 'dash_is_open_' in unityshell.cpp isn't correctly handled anymore (There are cases when the dash is open and dash_is_open is false). So there is the launcher_controller->IsOverlayOpen() which will return true if any overlay (hud/dash) is open on any monitor. Or we should add an IsVisible() in the DashController, so we don't have to worry about the dash_is_open boolean being correctly updated.