Implemented ACTION_REQUEST_SET_AUTOFILL_SERVICE.

Bug: 37673809
Fixes: 37576671
Test: manual verification
Test: make RunSettingsRoboTests -j90

Change-Id: I36170cb715473dfbf598deedd9719a46168aabc8
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 8535b2f..2d8e06a 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -3077,6 +3077,16 @@
             android:permission="android.permission.DUMP"
             android:enabled="@bool/config_has_help" />
 
+        <activity android:name=".applications.defaultapps.AutofillPickerActivity"
+                android:taskAffinity=""
+                android:noHistory="true">
+            <intent-filter android:priority="1">
+                <action android:name="android.settings.REQUEST_SET_AUTOFILL_SERVICE" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:scheme="package" />
+            </intent-filter>
+        </activity>
+
         <!-- This is the longest AndroidManifest.xml ever. -->
     </application>
 </manifest>