Add initial implementation of PhotosProvider.

Change-Id: I98694cf54bd0fb549703a7184e1816e9590a05ff
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 3cd30cb..1a6f800 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -254,6 +254,11 @@
                 android:exported="true"
                 android:permission="com.android.gallery3d.permission.GALLERY_PROVIDER"
                 android:authorities="com.android.gallery3d.provider" />
+        <provider
+                android:name="com.android.photos.data.PhotoProvider"
+                android:authorities="com.android.gallery3d.photoprovider"
+                android:syncable="false"
+                android:exported="false"/>
         <activity android:name="com.android.gallery3d.gadget.WidgetClickHandler" />
         <activity android:name="com.android.gallery3d.app.DialogPicker"
                 android:configChanges="keyboardHidden|orientation|screenSize"