Implemented HEVC video demuxing and parsing

media/media.gyp

Index: media/media.gyp
diff --git a/media/media.gyp b/media/media.gyp
index 57695cd5cedab85f1ab5f9d5b591941c17730936..0c4df9174bf265e3e3798949dc881ea46b17c972 100644
--- a/media/media.gyp
+++ b/media/media.gyp
@@ -671,6 +671,20 @@
             ],
           },
         }],
+        ['proprietary_codecs==1 and enable_hevc_demuxing==1', {
+          'sources': [
+            'filters/h265_parser.cc',
+            'filters/h265_parser.h',
+            'formats/mp4/hevc.cc',
+            'formats/mp4/hevc.h',
+          ],
+        }],
+        ['media_use_ffmpeg==1 and proprietary_codecs==1 and enable_hevc_demuxing==1', {
+          'sources': [
+            'filters/ffmpeg_h265_to_annex_b_bitstream_converter.cc',
+            'filters/ffmpeg_h265_to_annex_b_bitstream_converter.h',
+          ],
+        }],
         ['media_use_libvpx==1', {
           'dependencies': [
             '<(DEPTH)/third_party/libvpx/libvpx.gyp:libvpx',
@@ -1277,6 +1291,11 @@
             'USE_NEON'
           ],
         }],
+        ['proprietary_codecs==1 and enable_hevc_demuxing==1', {
+          'sources': [
+            'filters/h265_parser_unittest.cc',
+          ],
+        }],
         ['media_use_ffmpeg==1', {
           'dependencies': [
             '../third_party/ffmpeg/ffmpeg.gyp:ffmpeg',