Re-land extract state management from WebMediaPlayerImpl.

media/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("//build/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
@@ skipping 209 matching lines @@
     "filters/h264_parser.cc",
     "filters/h264_parser.h",
     "filters/ivf_parser.cc",
     "filters/ivf_parser.h",
     "filters/jpeg_parser.cc",
     "filters/jpeg_parser.h",
     "filters/media_source_state.cc",
     "filters/media_source_state.h",
     "filters/opus_constants.cc",
     "filters/opus_constants.h",
+    "filters/pipeline_controller.cc",
+    "filters/pipeline_controller.h",
     "filters/source_buffer_range.cc",
     "filters/source_buffer_range.h",
     "filters/source_buffer_stream.cc",
     "filters/source_buffer_stream.h",
     "filters/stream_parser_factory.cc",
     "filters/stream_parser_factory.h",
     "filters/video_cadence_estimator.cc",
     "filters/video_cadence_estimator.h",
     "filters/video_renderer_algorithm.cc",
     "filters/video_renderer_algorithm.h",
@@ skipping 407 matching lines @@
     "filters/decrypting_video_decoder_unittest.cc",
     "filters/fake_video_decoder.cc",
     "filters/fake_video_decoder.h",
     "filters/fake_video_decoder_unittest.cc",
     "filters/file_data_source_unittest.cc",
     "filters/frame_processor_unittest.cc",
     "filters/h264_bit_reader_unittest.cc",
     "filters/h264_parser_unittest.cc",
     "filters/ivf_parser_unittest.cc",
     "filters/jpeg_parser_unittest.cc",
+    "filters/pipeline_controller_unittest.cc",
     "filters/source_buffer_stream_unittest.cc",
     "filters/video_cadence_estimator_unittest.cc",
     "filters/video_decoder_selector_unittest.cc",
     "filters/video_frame_stream_unittest.cc",
     "filters/video_renderer_algorithm_unittest.cc",
     "filters/vp8_bool_decoder_unittest.cc",
     "filters/vp8_parser_unittest.cc",
     "filters/vp9_parser_unittest.cc",
     "filters/vp9_raw_bits_reader_unittest.cc",
     "formats/common/offset_byte_queue_unittest.cc",
@@ skipping 271 matching lines @@
 if (proprietary_codecs) {
   fuzzer_test("media_cenc_utils_fuzzer") {
     sources = [
       "cdm/cenc_utils_fuzzertest.cc",
     ]
     deps = [
       ":media",
     ]
   }
 }