Implemented HEVC video demuxing and parsing

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index 0aae2ff62422a926e96dc3d4ebb3064a7de81a90..dea0c74eabd4434284c1390dd71d415ef7254d23 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -310,6 +310,13 @@ if (!is_mac) {
 
     defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 
+    # Platforms that want to use HEVC demuxing will set this flag, but currently
+    # it's only Chromecast, which doesn't use GN builds yet.
+    enable_hevc_demuxing = false

[wolenetz, 2015/09/02 20:43:18]

I don't know GN well enough: does this 'enable_hevc_demuxing' alias or
hide/conflict with the same identifier in the media/...gn files, or is it
different?

[DaleCurtis, 2015/09/02 21:20:41]

This file should include the media_options.gni file via import instead of
redefining it here.

[servolk, 2015/09/03 00:17:51]

Done.

+    if (enable_hevc_demuxing) {
+      defines += [ "ENABLE_HEVC_DEMUXING" ]
+    }
+
     configs += [
       "//build/config:precompiled_headers",
       "//build/config/compiler:no_size_t_to_int_warning",