Add recovery support for perf experiments.

This change establishes a place for perf experiments and adds a
script to delay experiments for recovery purposes. For more info
see go/pixel-perf-experiment-whatif.

Bug: 365855872
Test: build/flash, set .Perf__experiments_delay_seconds=10, verify that vendor.perf.allow_experiments=1 after 10 seconds
Flag: NONE controlled by Mendel instead
Change-Id: I78db482542066d5d5646d8c303dbe88054cfe66d
Signed-off-by: Dmitry Skiba <dskiba@google.com>
diff --git a/performance/experiments/Android.bp b/performance/experiments/Android.bp
new file mode 100644
index 0000000..a2f7ebe
--- /dev/null
+++ b/performance/experiments/Android.bp
@@ -0,0 +1,10 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+sh_binary {
+    name: "pixel-experiments-recovery.sh",
+    src: "pixel-experiments-recovery.sh",
+    vendor: true,
+    init_rc: ["pixel-experiments-recovery.rc"],
+}