Manifest for Android Studio 3.0

Change-Id: I0ed79171af90c993536e3d2dc720c6c84f4e4ae0
diff --git a/default.xml b/default.xml
index 2dd729e..bfb98ed 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="studio-master-dev"
+  <default revision="refs/tags/studio-3.0"
            remote="aosp"
            sync-j="4" />