Apply Cobalt customizations to updated Chromium media

[osagie98]

This pull request modifies the //media directory to allow it to build with Cobalt. These modifications are guarded with `#if defined(STARBOARD).

This pull request also includes the following changes:

1. Applies upstream Chromium changes to support IAMF audio. These changes are not guarded.
2. Creates new build targets for //ui/gfx and includes them in the build.

Remaining gaps:

• MediaLog is stubbed out. We should remove the customization and enable it. Tracked in b/230916218
• //skia and //ui/gfx have minor customizations that allow them to build with Cobalt. Most or all of these should be removed once //third_party/skia is updated to match Chromium.
• PipelineStatusCB is planned to be replaced with PipelineStatusCallback. We should update Cobalt media to use only PipelineStatusCallback. Tracked in b/335673619

b/319697087

[osagie98]

Media now builds and links, but doesn't run. I'll list notes I jotted down during customization, I'll need to resolve most of these before it's complete:

• Noticed in media/formats/mp4/track_run_iterator.cc line 485 that the Chromecast buildflag had been changed to #if 0 in the base update feature branch, check later if this is a build issue

• ReadCB in media/base/demuxer_stream.h is an opportunity to remove a customization (I later removed it)

• media/base/media_log_record.h, params was changed from base::DictionaryValue to base::Value. Now changed in the media update to base::Value::Dict. See if this may cause an issue.

• Same in media/base/media_serializers.h

• In media_serializers.h 333, check if SetKey needs to be changed to Set, among others in that file
  media/base/supported_types.cc has a lot of deleted hevc code, find out if it was moved

• New customizations have been added in the base/net update. Find these.

• Check why these lines https://github.com/youtube/cobalt/blame/960db55898df0c3c8676af8db98e3a7c1f8bd123/media/base/stream_parser_buffer.h#L66-L68 in stream parser buffer are excluded from the build. I removed this exclusion.

• Check return value of ChunkDemuxer::RunSegmentParserLoop, it can return kSuccessHasMoreData, does this need to be handled? (I later added loops to run this function)

• Do we update media_source_demuxer.cc/media2_sandbox.cc?

• In sbplayer_pipeline, ondemuxerstreamread() no longer takes a reference to a vector of buffers, and instead makes a copy. Is this a problem?

[xiaomings]

Please update the primary commit message of the PR to include more details.