Remove docked windows entirely in M59.

ash/common/wm/lock_window_state.cc

Index: ash/common/wm/lock_window_state.cc
diff --git a/ash/common/wm/lock_window_state.cc b/ash/common/wm/lock_window_state.cc
index 63af76d6bc07a59429291264d148e2681402605f..06c5448bea42aad47644e36497b323d4b38a58a1 100644
--- a/ash/common/wm/lock_window_state.cc
+++ b/ash/common/wm/lock_window_state.cc
@@ -44,14 +44,13 @@ void LockWindowState::OnWMEvent(wm::WindowState* window_state,
     case wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE:
     case wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE:
     case wm::WM_EVENT_TOGGLE_MAXIMIZE:
-    case wm::WM_EVENT_CYCLE_SNAP_DOCK_LEFT:
-    case wm::WM_EVENT_CYCLE_SNAP_DOCK_RIGHT:
+    case wm::WM_EVENT_CYCLE_SNAP_LEFT:
+    case wm::WM_EVENT_CYCLE_SNAP_RIGHT:
     case wm::WM_EVENT_CENTER:
     case wm::WM_EVENT_SNAP_LEFT:
     case wm::WM_EVENT_SNAP_RIGHT:
     case wm::WM_EVENT_NORMAL:
     case wm::WM_EVENT_MAXIMIZE:
-    case wm::WM_EVENT_DOCK:
       UpdateWindow(window_state,
                    GetMaximizedOrCenteredWindowType(window_state));
       return;