Don't activate minimized/bottom home card

Home Card will be minimized when an activity is activated, so don't re-activate home card. There is also no need to activate bottom home card, so activate the centered home card only.

BUG=400575

Review URL: https://codereview.chromium.org/435293003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287691 0039d316-1c4b-4281-b951-d872f2087c98

athena/home/home_card_impl.cc

@@ -322,7 +322,10 @@ void HomeCardImpl::SetState(HomeCard::State state) {
   if (state_ == HIDDEN) {
     home_card_widget_->Hide();
   } else {
-    home_card_widget_->Show();
+    if (state_ == VISIBLE_CENTERED)
+      home_card_widget_->Show();
+    else
+      home_card_widget_->ShowInactive();
     home_card_view_->SetState(state);
     layout_manager_->Layout();
   }