Add latest gmscore build to x20 dependencies.

Bug:
Change-Id: I6c1570affcef9d332b7e05c8a59719f6b920d9cb
diff --git a/.gitignore b/.gitignore
index 34c3afe..a599785 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,8 @@
 third_party/gmscore/gmscore_v9.tar.gz
 third_party/gmscore/gmscore_v10
 third_party/gmscore/gmscore_v10.tar.gz
+third_party/gmscore/latest
+third_party/gmscore/latest.tar.gz
 third_party/gradle/gradle.tar.gz
 third_party/gradle/gradle
 third_party/jasmin.tar.gz
diff --git a/build.gradle b/build.gradle
index f85dd6b..f11c7ae 100644
--- a/build.gradle
+++ b/build.gradle
@@ -152,6 +152,7 @@
         "gmscore/v8.tar.gz",
         "gmscore/gmscore_v9.tar.gz",
         "gmscore/gmscore_v10.tar.gz",
+        "gmscore/latest.tar.gz",
         "photos/2017-06-06.tar.gz",
         "youtube/youtube.android_11.47.tar.gz",
         "youtube/youtube.android_12.10.tar.gz",
diff --git a/third_party/gmscore/latest.tar.gz.sha1 b/third_party/gmscore/latest.tar.gz.sha1
new file mode 100644
index 0000000..0a0d4d4
--- /dev/null
+++ b/third_party/gmscore/latest.tar.gz.sha1
@@ -0,0 +1 @@
+d38c56b1c4583393fda2bff933a8d09443e5c792
\ No newline at end of file