Use new strategy for replaying builds. (#13439)

Results:
https://gist.github.com/oliverchang/5bfb9dda05f718fc237b72878ce91752

(tested from #13438).

There's a small number of regressions which I'll address later, but
overwhelmingly this seems
like a better approach to iterate on.

Author: oliverchang

infra/base-images/base-builder/Dockerfile

@@ -178,7 +178,6 @@ COPY bazel_build_fuzz_tests \
     install_rust.sh \
     install_swift.sh \
     python_coverage_helper.py \
-    bash_parser.py \
     srcmap \
     write_labels.py \
     make_build_replayable.py \

infra/base-images/base-builder/bash_parser.py

@@ -289,17 +289,6 @@ if [ "${OSS_FUZZ_ON_DEMAND}" != "0" ]; then
   exit 0
 fi
 
-
-if [[ ! -z "${CAPTURE_REPLAY_SCRIPT-}" ]]; then
-  # Capture a replaying build script which can be used for replaying the build
-  # after a vanilla build. This script is meant to be used in a cached
-  # container.
-  if [[ ! -f $SRC/replay_build.sh ]]; then
-    python3 -m pip install bashlex
-    python3 /usr/local/bin/bash_parser.py $SRC/build.sh
-  fi
-fi
-
 # Prepare the build command to run the project's build script.
 if [[ ! -z "${REPLAY_ENABLED-}" ]]; then
   # If this is a replay, then use replay_build.sh. This is expected to be

infra/base-images/base-builder/compile

@@ -49,9 +49,10 @@ docker run \
   --name=${_PROJECT}-origin-${_SANITIZER} \
   -v=$PWD/ccaches/${_PROJECT}/ccache:/workspace/ccache \
   -v=$PWD/build/out/${_PROJECT}/:/out/ \
+  -v=$BASE/infra/experimental/chronos:/chronos/ \
   gcr.io/oss-fuzz/${_PROJECT} \
   /bin/bash -c \
-  "export PATH=/ccache/bin:\$PATH && compile"
+  "export PATH=/ccache/bin:\$PATH && compile && cp /chronos/replay_build.sh \$SRC/"
 B_TIME=$(($SECONDS - $B_START))
 
 # Step 3: save (commit, locally) the cached container as an image