cros-constants.eclass: add CROS_GIT_AOSP_URL

This adds CROS_GIT_AOSP_URL variable for Android repos.

BUG=chromium:620402
TEST=None

Change-Id: I73c326157234068d90ba62ad0b7c3cf81b55d510
Reviewed-on: https://chromium-review.googlesource.com/522967
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/eclass/cros-constants.eclass b/eclass/cros-constants.eclass
index 991d7bb..4e89ad9 100644
--- a/eclass/cros-constants.eclass
+++ b/eclass/cros-constants.eclass
@@ -22,6 +22,11 @@
 # Url for the git server containing various Chrome/OS repos.
 CROS_GIT_INT_HOST_URL="https://chrome-internal.googlesource.com"
 
+# @ECLASS-VARIABLE: CROS_GIT_AOSP_URL
+# @DESCRIPTION:
+# Url for the git server containing various Android repos.
+CROS_GIT_AOSP_URL="https://android.googlesource.com"
+
 # @ECLASS-VARIABLE: AUTOTEST_BASE
 # @DESCRIPTION:
 # Path to build-time destination of autotest (relative to sysroot).