Add keywords to Slices

Attach the keywords used for Settings search to Slices.
Their primary use is helping match synonyms for presenters
which display slices without explicit Uri requests, like a launcher.

This changes:
- Updates database scheme
- Adds to SliceData object
- Grab keywords in the SliceDataConverter
- Set keywords on all slices

Test: robotests
Change-Id: I16c40d2380ffddaf0a87fb1b9cd58e95573b308f
Fixes: 78306195

src/com/android/settings/slices/SlicesDatabaseAccessor.java

@@ -44,6 +44,7 @@ public class SlicesDatabaseAccessor {
             IndexColumns.TITLE,
             IndexColumns.SUMMARY,
             IndexColumns.SCREENTITLE,
+            IndexColumns.KEYWORDS,
             IndexColumns.ICON_RESOURCE,
             IndexColumns.FRAGMENT,
             IndexColumns.CONTROLLER,
@@ -150,6 +151,7 @@ public class SlicesDatabaseAccessor {
         final String summary = cursor.getString(cursor.getColumnIndex(IndexColumns.SUMMARY));
         final String screenTitle = cursor.getString(
                 cursor.getColumnIndex(IndexColumns.SCREENTITLE));
+        final String keywords = cursor.getString(cursor.getColumnIndex(IndexColumns.KEYWORDS));
         final int iconResource = cursor.getInt(cursor.getColumnIndex(IndexColumns.ICON_RESOURCE));
         final String fragmentClassName = cursor.getString(
                 cursor.getColumnIndex(IndexColumns.FRAGMENT));
@@ -169,6 +171,7 @@ public class SlicesDatabaseAccessor {
                 .setTitle(title)
                 .setSummary(summary)
                 .setScreenTitle(screenTitle)
+                .setKeywords(keywords)
                 .setIcon(iconResource)
                 .setFragmentName(fragmentClassName)
                 .setPreferenceControllerClassName(controllerClassName)