Refactored the BUGREPORT_RECEIVED logic into a new service.

Although this Change doesn't modify the workflow logic itself, it paves
the way for upcoming changes where the overall bug report progress will
be monitored by this service.

BUG: 25794470
Change-Id: Id0c867b04b595b5d31d11531405408f3423dd68b
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index 4f087db..bf3982d 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -147,5 +147,9 @@
                 <action android:name="android.intent.action.BUGREPORT_FINISHED" />
             </intent-filter>
         </receiver>
+
+        <service
+            android:name=".BugreportProgressService"
+            android:exported="false"/>
     </application>
 </manifest>