capture_mode: Puts capture bar in MenuContainer.

Bug: 1142949
Change-Id: I0483368535561e9daf8715e11fce2f60054e70d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2517925Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Min Chen <minch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825919}

ash/capture_mode/capture_mode_session.cc

@@ -139,7 +139,7 @@ bool SetMouseWarpEnabled(bool enable) {
 aura::Window* GetParentContainer(aura::Window* root) {
   DCHECK(root);
   DCHECK(root->IsRootWindow());
-  return root->GetChildById(kShellWindowId_OverlayContainer);
+  return root->GetChildById(kShellWindowId_MenuContainer);
 }
 
 // Returns the smallest rect that contains all of |points|.

ash/root_window_controller.cc

@@ -233,6 +233,7 @@ void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
       kShellWindowId_UnparentedControlContainer,
       kShellWindowId_OverlayContainer,
       kShellWindowId_LockActionHandlerContainer,
+      kShellWindowId_MenuContainer,
   };
   constexpr int kExtraContainerIdsToMoveInUnifiedMode[] = {
       kShellWindowId_LockScreenContainer,