Implemented HEVC video demuxing and parsing

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1812 matching lines @@
         'ozone_platform_ozonex%': 1,
         'use_playready%': 0,
         'conditions': [
           ['target_arch=="arm"', {
             'arm_arch%': '',
             'arm_tune%': 'cortex-a9',
             'arm_thumb%': 1,
             'video_hole%': 1,
           }],
         ],
+        # HEVC/H265 demuxing support. Note that toggling this flag will enable
+        # only HEVC demuxing support, it does not imply decoding support (since
+        # HEVC is proprietary and HEVC decoders typically require additional
+        # licensing). Chromecast has hardware HEVC decoder on some platforms.
+        'defines': ['ENABLE_HEVC_DEMUXING'],
       }],
       ['chromecast==1 and OS!="android"', {
         'ozone_platform_cast%': 1
       }],
       ['OS=="linux" and target_arch!="mipsel"', {
         'clang%': 1,
       }],  # OS=="mac"
       ['OS=="mac"', {
         'conditions': [
           # All Chrome builds have breakpad symbols, but only process the
@@ skipping 4349 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }