Re-land extract state management from WebMediaPlayerImpl.

media/blink/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("//media/media_options.gni")
 import("//testing/test.gni")
 
 component("blink") {
   output_name = "media_blink"
 
@@ skipping 37 matching lines @@
     "lru.h",
     "media_blink_export.h",
     "multibuffer.cc",
     "multibuffer.h",
     "multibuffer_data_source.cc",
     "multibuffer_data_source.h",
     "multibuffer_reader.cc",
     "multibuffer_reader.h",
     "new_session_cdm_result_promise.cc",
     "new_session_cdm_result_promise.h",
+    "pipeline_state.cc",
+    "pipeline_state.h",
     "resource_multibuffer_data_provider.cc",
     "resource_multibuffer_data_provider.h",
     "texttrack_impl.cc",
     "texttrack_impl.h",
     "url_index.cc",
     "url_index.h",
     "video_frame_compositor.cc",
     "video_frame_compositor.h",
     "webaudiosourceprovider_impl.cc",
     "webaudiosourceprovider_impl.h",
@@ skipping 88 matching lines @@
 }
 
 # TODO(GYP): Delete this after we've converted everything to GN.
 # The _run targets exist only for compatibility w/ GYP.
 group("media_blink_unittests_run") {
   testonly = true
   deps = [
     ":media_blink_unittests",
   ]
 }