Make Serial number preference a copyable slice.

Fixes: 73769621
Test: robotests
Change-Id: Ic20d8865bc26c1acc7db74e665f92fe388d62f74

src/com/android/settings/deviceinfo/hardwareinfo/SerialNumberPreferenceController.java

@@ -21,6 +21,7 @@ import android.os.Build;
 
 import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
+import com.android.settings.slices.Sliceable;
 
 public class SerialNumberPreferenceController extends BasePreferenceController {
 
@@ -39,6 +40,17 @@ public class SerialNumberPreferenceController extends BasePreferenceController {
         return true;
     }
 
+    @Override
+    public boolean isCopyableSlice() {
+        return true;
+    }
+
+    @Override
+    public void copy() {
+        Sliceable.setCopyContent(mContext, getSummary(),
+                mContext.getText(R.string.status_serial_number));
+    }
+
     @Override
     public CharSequence getSummary() {
         return Build.getSerial();

src/com/android/settings/homepage/contextualcards/ContextualCardLoader.java

@@ -23,6 +23,7 @@ import static com.android.settings.slices.CustomSliceRegistry.NOTIFICATION_CHANN
 import android.content.Context;
 import android.database.ContentObserver;
 import android.database.Cursor;
+import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
 import android.text.format.DateUtils;

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

@@ -197,7 +197,7 @@ public class SliceBroadcastReceiver extends BroadcastReceiver {
             return;
         }
 
-        ((Sliceable) controller).copy();
+        controller.copy();
     }
 
     /**