Fix hardware keyboard entry for the omnibox.

This CL:
https://chromium-review.googlesource.com/c/1331689
overzealously captures all key events instead of the
previous logic that only handled a subset of th expected
navigational keys.  This restricts dispatching to the
list view except for the previously expected keys.

In particular, you can't type space in the current state,
which is...unfortunate.

BUG=898522

Change-Id: I55c055ae6f942cda833f2e3c678a458f55406741
Reviewed-on: https://chromium-review.googlesource.com/c/1336494Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Commit-Queue: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608202}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/suggestions/AutocompleteCoordinator.java

@@ -290,11 +290,14 @@ public class AutocompleteCoordinator implements UrlFocusChangeListener, UrlTextC
      */
     public boolean handleKeyEvent(int keyCode, KeyEvent event) {
         boolean isShowingList = mListView != null && mListView.isShown();
-        if (isShowingList && mMediator.getSuggestionCount() > 0
-                && (KeyNavigationUtil.isGoDown(event) || KeyNavigationUtil.isGoUp(event))) {
+
+        boolean isUpOrDown = KeyNavigationUtil.isGoUpOrDown(event);
+        if (isShowingList && mMediator.getSuggestionCount() > 0 && isUpOrDown) {
             mMediator.allowPendingItemSelection();
         }
-        if (isShowingList && mListView.onKeyDown(keyCode, event)) return true;
+        boolean isValidListKey = isUpOrDown || KeyNavigationUtil.isGoRight(event)
+                || KeyNavigationUtil.isEnter(event);
+        if (isShowingList && isValidListKey && mListView.onKeyDown(keyCode, event)) return true;
         if (KeyNavigationUtil.isEnter(event) && mParent.getVisibility() == View.VISIBLE) {
             mMediator.loadTypedOmniboxText(event.getEventTime());
             return true;