First pass at the url rendering service.

The service renders a list of urls at the given dimension and invokes the
callback interface for each result. A ParcelFileDescriptor is used to transfer
the large image data to the client. The client must close the file descriptor
is order free the underlying resources.

A more robust api will use UrlRendererRequest and UrlRendererResponse objects
to transfer data.
diff --git a/Android.mk b/Android.mk
index 7520afe..7cd482c 100644
--- a/Android.mk
+++ b/Android.mk
@@ -119,6 +119,8 @@
 	core/java/android/os/IPowerManager.aidl \
     core/java/android/os/IRemoteCallback.aidl \
 	core/java/android/os/IVibratorService.aidl \
+	core/java/android/service/urlrenderer/IUrlRendererService.aidl \
+	core/java/android/service/urlrenderer/IUrlRendererCallback.aidl \
     core/java/android/service/wallpaper/IWallpaperConnection.aidl \
     core/java/android/service/wallpaper/IWallpaperEngine.aidl \
     core/java/android/service/wallpaper/IWallpaperService.aidl \