Roll chromium_revision b1a56e7eae..b4fb8097f2 (628426:628538)
Roll chromium_revision b1a56e7eae..b4fb8097f2 (628426:628538)

Change log: https://chromium.googlesource.com/chromium/src/+log/b1a56e7eae..b4fb8097f2
Full diff: https://chromium.googlesource.com/chromium/src/+/b1a56e7eae..b4fb8097f2

Changed dependencies
* src/base: https://chromium.googlesource.com/chromium/src/base/+log/74adaea16c..4b78c0bd13
* src/build: https://chromium.googlesource.com/chromium/src/build/+log/484514e5b0..eb6198331c
* src/ios: https://chromium.googlesource.com/chromium/src/ios/+log/89d395a411..8f35e7fbb0
* src/testing: https://chromium.googlesource.com/chromium/src/testing/+log/2d89ba8fdb..76a6275418
* src/third_party: https://chromium.googlesource.com/chromium/src/third_party/+log/12369ff543..3bd4180fbf
* src/third_party/android_tools: https://chromium.googlesource.com/android_tools.git/+log/e958d6ea74..347a7c8078
* src/third_party/boringssl/src: https://boringssl.googlesource.com/boringssl.git/+log/6c1b376e1d..1a51a5b4a6
* src/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/4f738c1fe5..a1fbdff177
* src/tools: https://chromium.googlesource.com/chromium/src/tools/+log/ce771681ff..7d96add57e
DEPS diff: https://chromium.googlesource.com/chromium/src/+/b1a56e7eae..b4fb8097f2/DEPS

No update to Clang.

TBR=fddc8541b39d4af742d581dcf8938a66de21d310@webrtc-ci.iam.gserviceaccount.com,
BUG=None

Change-Id: I5af637e3822ff4cb49d22a14e40016ca3995bb45
Reviewed-on: https://webrtc-review.googlesource.com/c/121140
Reviewed-by: Autoroller <fddc8541b39d4af742d581dcf8938a66de21d310@webrtc-ci.iam.gserviceaccount.com>
Commit-Queue: Autoroller <fddc8541b39d4af742d581dcf8938a66de21d310@webrtc-ci.iam.gserviceaccount.com>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26519}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc