Manifest for NDK Release 15 Beta 2 (3996722)

Change-Id: Idf39eaacbd5aa8e54859d5d47756ac32f07e45f4
diff --git a/default.xml b/default.xml
index 056592b..e9048fa 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="refs/tags/ndk-r15-beta1"
+  <default revision="refs/tags/ndk-r15-beta2"
            remote="aosp"
            sync-j="4" />