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/core/java/android/printservice/IPrintService.aidl b/core/java/android/printservice/IPrintService.aidl
new file mode 100644
index 0000000..eabd96d
--- /dev/null
+++ b/core/java/android/printservice/IPrintService.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.printservice;
+
+import android.os.ICancellationSignal;
+import android.print.PrintJobInfo;
+import android.print.PrinterId;
+import android.printservice.IPrintServiceClient;
+
+/**
+ * Top-level interface to a print service component.
+ *
+ * @hide
+ */
+oneway interface IPrintService {
+    void setClient(IPrintServiceClient client);
+    void requestCancelPrintJob(in PrintJobInfo printJob);
+    void onPrintJobQueued(in PrintJobInfo printJob);
+    void startPrinterDiscovery();
+    void stopPrinterDiscovery();
+}