Delete browser MSE implementation.

media/base/android/BUILD.gn

Index: media/base/android/BUILD.gn
diff --git a/media/base/android/BUILD.gn b/media/base/android/BUILD.gn
index 396492ea990886c241c701b28be4925a4287e381..6b2a18f42e32725031857ab9fac92ba3353c4574 100644
--- a/media/base/android/BUILD.gn
+++ b/media/base/android/BUILD.gn
@@ -55,17 +55,10 @@ if (is_android) {
     sources = [
       "android_cdm_factory.cc",
       "android_cdm_factory.h",
-      "audio_decoder_job.cc",
-      "audio_decoder_job.h",
-      "demuxer_android.h",
-      "demuxer_stream_player_params.cc",
-      "demuxer_stream_player_params.h",
       "media_client_android.cc",
       "media_client_android.h",
       "media_codec_util.cc",
       "media_codec_util.h",
-      "media_decoder_job.cc",
-      "media_decoder_job.h",
       "media_drm_bridge.cc",
       "media_drm_bridge.h",
       "media_drm_bridge_cdm_context.cc",
@@ -83,17 +76,11 @@ if (is_android) {
       "media_player_manager.h",
       "media_resource_getter.cc",
       "media_resource_getter.h",
-      "media_source_player.cc",
-      "media_source_player.h",
-      "media_statistics.cc",
-      "media_statistics.h",
       "media_url_interceptor.h",
       "provision_fetcher.h",
       "sdk_media_codec_bridge.cc",
       "sdk_media_codec_bridge.h",
       "stream_texture_wrapper.h",
-      "video_decoder_job.cc",
-      "video_decoder_job.h",
     ]
     configs += [
       "//media:media_config",
@@ -117,7 +104,6 @@ if (is_android) {
     sources = [
       "media_drm_bridge_unittest.cc",
       "media_player_bridge_unittest.cc",
-      "media_source_player_unittest.cc",
       "sdk_media_codec_bridge_unittest.cc",
       "test_data_factory.cc",
       "test_data_factory.h",