Another project in ChromeOS is using these files. To make libvpx
rolls simpler, add these files back unitl the other project removes
the dependency.

crbug.com/387246 tracking bug to remove dependency.

Change-Id: If9c197081c845c4a4e5c5488d4e0190380bcb1e4

We use libwebm instead of libmkv and nestegg.

Change-Id: I339eae081061c2e3eb8b234f14ae1bc846f85011

Update the local makefile to build all the files and the test
application by default to simplify build verification.

Change-Id: Ic10141ea14c85110ff7507447d16297b77d296e9

The rest of the code uses stdint types and this makes porting
easier.

Change-Id: Ie2f565f6a919199f0145b6aea97bb7588548e97d

This lets the caller pass a string literal for the codec id.

From https://bugzilla.mozilla.org/show_bug.cgi?id=966044

Change-Id: I345bd7a5943f0c33b3fb368d4280100ac5038a3d

Fixes a warning.

Change-Id: I7f98ea7847cf8e776a4bbd65d273036280bfb5dd

Change-Id: I5a83f6651a42df8387aa8996f9353a20e60483df

Change-Id: Id0bfaedf54ff3f59d4cf361c170a0b5a5711e5f2