Reject frames with invalid BeginFrameAck in CompositorFrameSinkSupport

cc/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//cc/cc.gni")
 import("//gpu/vulkan/features.gni")
 
 cc_component("cc") {
   sources = [
     "benchmarks/benchmark_instrumentation.cc",
@@ skipping 501 matching lines @@
   testonly = true
   sources = [
     "test/animation_test_common.cc",
     "test/animation_test_common.h",
     "test/animation_timelines_test_common.cc",
     "test/animation_timelines_test_common.h",
     "test/begin_frame_args_test.cc",
     "test/begin_frame_args_test.h",
     "test/begin_frame_source_test.cc",
     "test/begin_frame_source_test.h",
+    "test/compositor_frame_helpers.cc",
+    "test/compositor_frame_helpers.h",
     "test/fake_compositor_frame_sink.cc",
     "test/fake_compositor_frame_sink.h",
     "test/fake_compositor_frame_sink_client.cc",
     "test/fake_compositor_frame_sink_client.h",
     "test/fake_compositor_frame_sink_support_client.cc",
     "test/fake_compositor_frame_sink_support_client.h",
     "test/fake_content_layer_client.cc",
     "test/fake_content_layer_client.h",
     "test/fake_external_begin_frame_source.cc",
     "test/fake_external_begin_frame_source.h",
@@ skipping 429 matching lines @@
   data = [
     "test/data/",
 
     # Needed for isolate script to execute.
     "//testing/scripts/common.py",
     "//testing/xvfb.py",
     "//testing/scripts/run_gtest_perf_test.py",
     "//tools/perf/generate_legacy_perf_dashboard_json.py",
   ]
 }