Hides auxiliary_text when candidates are hidden.

Their visibility was controlled separately but r242610 changed
this.

This is intentionally false instead of is_auxiliary_text_visible()
of candidate_window_ because that field is not updated at that point.

BUG=332275
R=hsumita@chromium.org, komatsu@chromium.org
TEST=manually

Review URL: https://codereview.chromium.org/128863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243866 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/input_method/candidate_window_view.cc

@@ -208,6 +208,7 @@ void CandidateWindowView::UpdateVisibility() {
 
 void CandidateWindowView::HideLookupTable() {
   candidate_area_->SetVisible(false);
+  auxiliary_text_->SetVisible(false);
   UpdateVisibility();
 }