transcoder: Add startThreadPool to benchmark

Adding ProcessState startThreadPool fixes a
hang, related to Extractor, seen for running
benchmark for many assets or multiple
iterations.

Bug: 175889103
Test: ./MediaTranscoderBenchmark
--benchmark_filter=BM_TranscodeVideoPassthrough
--benchmark_min_time=60

Change-Id: Ib4f1bbf131b4e97b0cf3391747dc5541f5f8fcd9
diff --git a/media/libmediatranscoding/transcoder/benchmark/Android.bp b/media/libmediatranscoding/transcoder/benchmark/Android.bp
index 6c87233..74f65b9 100644
--- a/media/libmediatranscoding/transcoder/benchmark/Android.bp
+++ b/media/libmediatranscoding/transcoder/benchmark/Android.bp
@@ -1,6 +1,13 @@
 cc_defaults {
     name: "benchmarkdefaults",
-    shared_libs: ["libmediandk", "libbase", "libbinder_ndk", "libutils", "libnativewindow"],
+    shared_libs: [
+        "libmediandk",
+        "libbase",
+        "libbinder_ndk",
+        "libbinder",
+        "libutils",
+        "libnativewindow",
+    ],
     static_libs: ["libmediatranscoder", "libgoogle-benchmark"],
     test_config_template: "AndroidTestTemplate.xml",
     test_suites: ["device-tests", "TranscoderBenchmarks"],