PackageInstaller changes based on feedback.

Mostly cosmetic changes from API council feedback.

Bug: 16543552
Change-Id: Ic926829b3f77c31f50a899c59b779353daf00d59
diff --git a/Android.mk b/Android.mk
index e3d3433..30cb9c6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -131,7 +131,7 @@
 	core/java/android/content/pm/IPackageInstallObserver.aidl \
 	core/java/android/content/pm/IPackageInstallObserver2.aidl \
 	core/java/android/content/pm/IPackageInstaller.aidl \
-	core/java/android/content/pm/IPackageInstallerObserver.aidl \
+	core/java/android/content/pm/IPackageInstallerCallback.aidl \
 	core/java/android/content/pm/IPackageInstallerSession.aidl \
 	core/java/android/content/pm/IPackageManager.aidl \
 	core/java/android/content/pm/IPackageMoveObserver.aidl \