Enable rich status reporting for binder interface

Generated aidl code now requires services to return
android::binder::Status objects from server interfaces. These objects
allow services to report error conditions as exceptions in Java.

Bug: 25632204
Test: Generated code compiles with updated aidl

Change-Id: I588be72e35b6caaa31454ecde0f51544e1134ce9
diff --git a/binder_service.cc b/binder_service.cc
index b8c62ce..8029505 100644
--- a/binder_service.cc
+++ b/binder_service.cc
@@ -20,30 +20,30 @@
 using android::String16;
 using android::os::IUpdateEnginePayloadApplicationCallback;
 using android::sp;
-using android::status_t;
+using android::binder::Status;
 using std::vector;
 
 namespace chromeos_update_engine {
 
-status_t BinderService::applyPayload(
+Status BinderService::applyPayload(
     const String16& url,
     const vector<String16>& header_kv_pairs,
     const sp<IUpdateEnginePayloadApplicationCallback>& callback,
     int32_t* return_value) {
   *return_value = 0;
-  return OK;
+  return Status::ok();
 }
 
-status_t BinderService::suspend() {
-  return OK;
+Status BinderService::suspend() {
+  return Status::ok();
 }
 
-status_t BinderService::resume() {
-  return OK;
+Status BinderService::resume() {
+  return Status::ok();
 }
 
-status_t BinderService::cancel() {
-  return OK;
+Status BinderService::cancel() {
+  return Status::ok();
 }
 
 }  // namespace chromeos_update_engine