Make content descriptions of task cards, the title description

Use the title description as content description for the task
card, this should be better for talkback.

BUG: 28594452
Change-Id: Idc97004f1370a35ea5328c4e9e46a72a9349c8f4

packages/SystemUI/res/layout-television/recents_tv_task_card_view.xml

@@ -19,7 +19,6 @@
         android:layout_height="wrap_content"
         android:focusable="true"
         android:focusableInTouchMode="true"
-        android:contentDescription="@string/status_bar_recent_inspect_item_title"
         android:layout_gravity="center"
         android:layout_centerInParent="true"
         android:clipToPadding="false"

packages/SystemUI/src/com/android/systemui/recents/tv/views/TaskCardView.java

@@ -101,6 +101,7 @@ public class TaskCardView extends LinearLayout {
         mTitleTextView.setText(task.title);
         mBadgeView.setImageDrawable(task.icon);
         setThumbnailView();
+        setContentDescription(task.titleDescription);
     }
 
     public Task getTask() {