Roll chromium_revision 4b42aa218b..2b53ee0889 (411951:411979)
Roll chromium_revision 4b42aa218b..2b53ee0889 (411951:411979)

Change log: https://chromium.googlesource.com/chromium/src/+log/4b42aa218b..2b53ee0889
Full diff: https://chromium.googlesource.com/chromium/src/+/4b42aa218b..2b53ee0889

No dependencies changed.
No update to Clang.

TBR=

Review-Url: https://codereview.webrtc.org/2242193003
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13762}

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