Refactor finalization scripts.

Bug: 264308911
Test: run locally
Change-Id: I60fa1e1121fafb617d8508403fae07f0bdf39e66
diff --git a/tools/finalization/step-2.sh b/tools/finalization/step-2.sh
new file mode 100755
index 0000000..10b752e
--- /dev/null
+++ b/tools/finalization/step-2.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+# Script to perform a 2nd step of Android Finalization: REL finalization, create CLs and upload to Gerrit.
+
+function commit_step_2_changes() {
+    repo forall -c '\
+        if [[ $(git status --short) ]]; then
+            repo start "$FINA_PLATFORM_CODENAME-SDK-Finalization-Rel" ;
+            git add -A . ;
+            git commit -m "$FINA_PLATFORM_CODENAME/$FINA_PLATFORM_SDK_VERSION is now REL" \
+                       -m "Ignore-AOSP-First: $FINA_PLATFORM_CODENAME Finalization
+Bug: $FINA_BUG_ID
+Test: build";
+
+            repo upload --cbr --no-verify -o nokeycheck -t -y . ;
+            git clean -fdx ; git reset --hard ;
+        fi'
+}
+
+function finalize_step_2_main() {
+    local top="$(dirname "$0")"/../../../..
+    source $top/build/make/tools/finalization/environment.sh
+
+    local m="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_BUILD_VARIANT=userdebug"
+
+    # vndk etc finalization
+    source $top/build/make/tools/finalization/finalize-aidl-vndk-sdk-resources.sh
+
+    # prebuilts etc
+    source $top/build/make/tools/finalization/finalize-sdk-rel.sh
+
+    # Update prebuilts.
+    "$top/prebuilts/build-tools/path/linux-x86/python3" "$top/packages/modules/common/tools/finalize_sdk.py" -b ${FINA_BUG_ID} -f ${FINA_MAINLINE_EXTENSION} -r "${FINA_MAINLINE_SDK_COMMIT_MESSAGE}" ${FINA_MAINLINE_SDK_BUILD_ID}
+
+    # build to confirm everything is OK
+    AIDL_FROZEN_REL=true $m
+
+    # move all changes to finalization branch/topic and upload to gerrit
+    commit_step_2_changes
+}
+
+finalize_step_2_main