Roll chromium_revision 642e17c22f..ff49839843 (476907:476908)
Roll chromium_revision 642e17c22f..ff49839843 (476907:476908)

Change log: https://chromium.googlesource.com/chromium/src/+log/642e17c22f..ff49839843
Full diff: https://chromium.googlesource.com/chromium/src/+/642e17c22f..ff49839843

No dependencies changed.
No update to Clang.

TBR=
BUG=None

Review-Url: https://codereview.webrtc.org/2922083002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#18433}

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