Switch default execution strategy to racing for developer builds am: 524428a647 am: 7a02fa7b79

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/13292491

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3b81dd98bb24f96ad6491c191f43c041b9fa0885

rbesetup.sh

@@ -64,7 +64,10 @@ function _export_metrics_uploader() {
 # executed by RBE. This file should be sourced once per checkout of Android code.
 function _set_rbe_vars() {
   export USE_RBE="true"
-  export RBE_CXX_EXEC_STRATEGY="remote_local_fallback"
+  export RBE_CXX_EXEC_STRATEGY="racing"
+  export RBE_JAVAC_EXEC_STRATEGY="racing"
+  export RBE_R8_EXEC_STRATEGY="racing"
+  export RBE_D8_EXEC_STRATEGY="racing"
   export RBE_use_unified_cas_ops="true"
   export RBE_JAVAC=1
   export RBE_R8=1