Remove extra uses of basictypes.h.

None of these files use size_t, int types or any of the macros/types
defined in basictypes.h.

BUG=webrtc:6853
R=tommi@webrtc.org

Review-Url: https://codereview.webrtc.org/2564673002
Cr-Original-Commit-Position: refs/heads/master@{#15513}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 5493b8a59deb16cf0481e24707a0ed72d19047dc
6 files changed