Activate the workspace that dragged window has landed.

ui/aura_shell/default_container_layout_manager.cc

Index: ui/aura_shell/default_container_layout_manager.cc
diff --git a/ui/aura_shell/default_container_layout_manager.cc b/ui/aura_shell/default_container_layout_manager.cc
index caa5331fc8511cb8f086b98ffdc11b7dca80136d..98d3dc31bd0eddcb7dd6756d7ac40c3bee292c0e 100644
--- a/ui/aura_shell/default_container_layout_manager.cc
+++ b/ui/aura_shell/default_container_layout_manager.cc
@@ -74,9 +74,10 @@ void DefaultContainerLayoutManager::EndMove(
   // TODO(oshima): finish moving window between workspaces.
   AutoReset<bool> reset(&ignore_calculate_bounds_, true);
   drag_window_ = NULL;
-  Workspace* workspace = workspace_manager_->GetActiveWorkspace();
-  if (workspace)
-    workspace->Layout(NULL, NULL);
+
+  Workspace* workspace = workspace_manager_->FindBy(drag);
+  workspace->Layout(NULL, NULL);
+  workspace->Activate();
   workspace_manager_->SetOverview(false);
 }