Manifest for Android 7.1.2 Release 39 (5787804)

Change-Id: I2d7cc462a0dbacee0430dcf9b8877dc43e00c715
diff --git a/default.xml b/default.xml
index 5437fd8..bad0f22 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/android-7.1.2_r38"
+  <default revision="refs/tags/android-7.1.2_r39"
            remote="aosp"
            sync-j="4" />