Add google-java-format tools to GLOBAL-PREUPLOAD.cfg.

Bug: 31552314
Test: Verified on a sample project
Change-Id: Ie15d0233e186c61c8f65fb567614aeb754995cb1
diff --git a/GLOBAL-PREUPLOAD.cfg b/GLOBAL-PREUPLOAD.cfg
index e8d0b99..c630482 100644
--- a/GLOBAL-PREUPLOAD.cfg
+++ b/GLOBAL-PREUPLOAD.cfg
@@ -12,3 +12,5 @@
 clang-format = ${REPO_ROOT}/prebuilts/clang/host/${BUILD_OS}/clang-stable/bin/clang-format
 git-clang-format = ${REPO_ROOT}/prebuilts/clang/host/${BUILD_OS}/clang-stable/bin/git-clang-format
 gofmt = ${REPO_ROOT}/prebuilts/go/${BUILD_OS}/bin/gofmt
+google-java-format = ${REPO_ROOT}/prebuilts/tools/common/google-java-format/google-java-format
+google-java-format-diff = ${REPO_ROOT}/prebuilts/tools/common/google-java-format/google-java-format-diff.py