Remove docked windows entirely in M59.

ash/common/wm/maximize_mode/maximize_mode_window_manager.cc

Index: ash/common/wm/maximize_mode/maximize_mode_window_manager.cc
diff --git a/ash/common/wm/maximize_mode/maximize_mode_window_manager.cc b/ash/common/wm/maximize_mode/maximize_mode_window_manager.cc
index cea2689b228de4ab96d748f49721ea572491b894..41214a788f93926edd31a4cdb8521a0ecbdc8152 100644
--- a/ash/common/wm/maximize_mode/maximize_mode_window_manager.cc
+++ b/ash/common/wm/maximize_mode/maximize_mode_window_manager.cc
@@ -265,10 +265,6 @@ bool MaximizeModeWindowManager::ShouldHandleWindow(WmWindow* window) {
   if (window->IsAlwaysOnTop())
     return false;
 
-  // Windows in the dock should not be managed by us.
-  if (window->GetWindowState()->IsDocked())
-    return false;
-
   // If the changing bounds in the maximized/fullscreen is allowed, then
   // let the client manage it even in maximized mode.
   if (window->GetWindowState()->allow_set_bounds_in_maximized())