Implemented HEVC video demuxing and parsing

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index c4d3ea3927b5b1b037c50d49e777e72718606242..4cbe85aa9df411d437b2296b5dde8845e3fe57b8 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -306,6 +306,21 @@ component("media") {
     }
   }
 
+  if (proprietary_codecs && enable_hevc_demuxing) {
+    sources += [
+      "filters/h265_parser.cc",
+      "filters/h265_parser.h",
+      "formats/mp4/hevc.cc",
+      "formats/mp4/hevc.h",
+    ]
+    if (media_use_ffmpeg) {
+      sources += [
+        "filters/ffmpeg_h265_to_annex_b_bitstream_converter.cc",
+        "filters/ffmpeg_h265_to_annex_b_bitstream_converter.h",
+      ]
+    }
+  }
+
   if (cpu_arch == "arm" && arm_use_neon) {
     defines += [ "USE_NEON" ]
   }
@@ -530,6 +545,7 @@ test("media_unittests") {
     "filters/frame_processor_unittest.cc",
     "filters/h264_bit_reader_unittest.cc",
     "filters/h264_parser_unittest.cc",
+    "filters/h265_parser_unittest.cc",
     "filters/jpeg_parser_unittest.cc",
     "filters/renderer_impl_unittest.cc",
     "filters/skcanvas_video_renderer_unittest.cc",