Print - platform  APIs

Related changes:
    Skia (inlcude PDF APIs): https://googleplex-android-review.googlesource.com/#/c/305814/
    Canvas to PDF: https://googleplex-android-review.googlesource.com/#/c/319367/
    Settings (initial version): https://googleplex-android-review.googlesource.com/#/c/306077/
    Build: https://googleplex-android-review.googlesource.com/#/c/292437/
    Sample print services: https://googleplex-android-review.googlesource.com/#/c/281785/

Change-Id: I104d12efd12577f05c7b9b2a5e5e49125c0f09da
diff --git a/Android.mk b/Android.mk
index f0828b7..618f404 100644
--- a/Android.mk
+++ b/Android.mk
@@ -157,6 +157,15 @@
 	core/java/android/os/IUserManager.aidl \
 	core/java/android/os/IVibratorService.aidl \
 	core/java/android/service/notification/INotificationListener.aidl \
+	core/java/android/print/IPrinterDiscoveryObserver.aidl \
+	core/java/android/print/IPrintAdapter.aidl \
+	core/java/android/print/IPrintClient.aidl \
+	core/java/android/print/IPrintProgressListener.aidl \
+	core/java/android/print/IPrintManager.aidl \
+	core/java/android/print/IPrintSpoolerService.aidl \
+	core/java/android/print/IPrintSpoolerServiceCallbacks.aidl \
+	core/java/android/printservice/IPrintService.aidl \
+	core/java/android/printservice/IPrintServiceClient.aidl \
 	core/java/android/service/dreams/IDreamManager.aidl \
 	core/java/android/service/dreams/IDreamService.aidl \
 	core/java/android/service/wallpaper/IWallpaperConnection.aidl \