Fixing snake_case files that were renamed in PRESUBMIT.py
Fixing snake_case files that were renamed in PRESUBMIT.py

In the great rename of 2019, several files were renamed to snake_case.
Some of these files were referenced in PRESUBMIT.py alas, the references
were not updated.

Bug: webrtc:10159
Change-Id: I462938a1e8ea11b865d9427b40cba43fd0aab998
Reviewed-on: https://webrtc-review.googlesource.com/c/119160
Commit-Queue: Amit Hilbuch <d2550ade90c131f91745c9e77cef0b6abfbee93c@webrtc.org>
Reviewed-by: Karl Wiberg <2c708eb0a58047bf403399f50b3da33ffd2dd444@webrtc.org>
Reviewed-by: Per Åhgren <3616c2c8a2c30a769c5419f89b4a810ea6e2f079@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26376}
ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc