Roll chromium_revision 99c4a934d4..1f3b0bc457 (477570:477597)
Roll chromium_revision 99c4a934d4..1f3b0bc457 (477570:477597)

Change log: https://chromium.googlesource.com/chromium/src/+log/99c4a934d4..1f3b0bc457
Full diff: https://chromium.googlesource.com/chromium/src/+/99c4a934d4..1f3b0bc457

Changed dependencies:
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/3a203b31a5..e05a1f6934
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/3201278d73..420e8c1b3d
DEPS diff: https://chromium.googlesource.com/chromium/src/+/99c4a934d4..1f3b0bc457/DEPS

No update to Clang.

TBR=
BUG=None

Review-Url: https://codereview.webrtc.org/2926073002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#18467}

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