Revert "RTPFragmentationHeader::VerifyAndAllocateFragmentationHeader: Verify that size fits in 16 bits" https://webrtc-codereview.appspot.com/47229004/
Revert "RTPFragmentationHeader::VerifyAndAllocateFragmentationHeader: Verify that size fits in 16 bits" https://webrtc-codereview.appspot.com/47229004/

Reason for revert: Breaks Chromium FYI compilation

This reverts commit 10022cdeae785187e1d4329042b4ed294c393a16.

BUG=484432
TBR=tommi

Review URL: https://webrtc-codereview.appspot.com/54499004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#9247}

TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc