New interface to pick a contact as attachment

New ContactMediaChooser allows the user to pick a contact from contacts
apps as attachment.

Test: Manual

Change-Id: Idb00cd8a3164a3cac859947affd5cbcc7e41b8c2
Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>

src/com/android/messaging/ui/mediapicker/MediaChooser.java

@@ -18,6 +18,7 @@ package com.android.messaging.ui.mediapicker;
 
 import android.app.FragmentManager;
 import android.content.Context;
+import android.content.Intent;
 import androidx.appcompat.app.ActionBar;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -203,6 +204,9 @@ abstract class MediaChooser extends BasePagerViewHolder
     public void stopTouchHandling() {
     }
 
+    protected void onActivityResult(
+            final int requestCode, final int resultCode, final Intent data) {}
+
     @Override
     public int getConversationSelfSubId() {
         return mMediaPicker.getConversationSelfSubId();