Now Finalize() will close all the files used by the segmenters. This
is important to allow WebMMuxer::FireOnMediaEndEvent to get the
correct size of the media file.
This also changes the WebM muxer to use 64-bit numbers for the init
and index ranges to correctly support >4GB files.
b/28194272
Change-Id: Ia84e4a4b0756f89644efea99a1a51968b22a1338
* Added WebM muxer that supports both single and multi-segment modes.
* WebM muxer supports MPD generation.
* Enabled WebM muxer and demuxer in packager.
b/22463220
b/25089245
b/25089714
Change-Id: I9f6e8fc51e08fbb1d685229c5cb54ea60f7bed8f