Update Search UX for OC

- Change text opacity for Search UX
- Update dps between summary and breadcrumbs
- Remove icons for Title items
- Restrict summary to single line

Test: manual
Bug: 36853763
Change-Id: I2acd574ec9c490bbe7097d30c512e58ebe1ad9f2

tests/robotests/src/com/android/settings/search2/DatabaseIndexingManagerTest.java

@@ -303,7 +303,7 @@ public class DatabaseIndexingManagerTest {
         // Class Name
         assertThat(cursor.getString(11)).isEqualTo(className);
         // Icon
-        assertThat(cursor.getInt(12)).isEqualTo(iconResId);
+        assertThat(cursor.getInt(12)).isEqualTo(0);
         // Intent Action
         assertThat(cursor.getString(13)).isEqualTo(action);
         // Target Package