Not eating Space button.

Answer card eats Space, so that pressing space while it's selected
doesn't add space to the search box. So if you start typing a query with
a space, you might be not able to enter space.

Other kinds of results don't eat space.

Now not eating Space.

Bug=712331

Change-Id: If7bb4224d6d2597bd50e31eececc184d7f401904
Reviewed-on: https://chromium-review.googlesource.com/595154Reviewed-by: Yury Khmel <khmel@chromium.org>
Commit-Queue: Vadim Tryshev <vadimt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491583}

ui/app_list/views/search_result_answer_card_view.cc

@@ -79,6 +79,15 @@ class SearchResultAnswerCardView::SearchAnswerContainerView
 
   void StateChanged(ButtonState old_state) override { UpdateBackgroundColor(); }
 
+  bool OnKeyPressed(const ui::KeyEvent& event) override {
+    if (event.key_code() == ui::VKEY_SPACE) {
+      // Shouldn't eat Space; we want Space to go to the search box.
+      return false;
+    }
+
+    return CustomButton::OnKeyPressed(event);
+  }
+
   // views::ButtonListener overrides:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override {
     DCHECK(sender == this);