Implement opus seek preroll for MediaSourceExtensions.

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 734 matching lines @@
       # native counterparts to the test apk.
       "//media/base/android:media_java",
       "//media/gpu:android_video_decode_accelerator_unittests",
       "//ui/android:ui_java",
     ]
   }
 
   if (enable_media_remoting) {
     deps += [ "//media/remoting:media_remoting_tests" ]
   }
+
+  if (proprietary_codecs) {
+    configs += [ "//third_party/opus:opus_config" ]
+  }
 }
 
 test("media_perftests") {
   configs += [ ":media_config" ]
   deps = [
     ":media",
     ":shared_memory_support",
     ":test_support",
     "//base/test:test_support",
     "//media/audio:test_support",
@@ skipping 183 matching lines @@
   fuzzer_test("media_mp4_avcc_parser_fuzzer") {
     sources = [
       "formats/mp4/mp4_avcc_parser_fuzzer.cc",
     ]
     deps = [
       ":media",
       "//base",
     ]
   }
 }