Roll Chromium from 2f74454086a5 to b7bb5840cba2 (462 revisions)

https://chromium.googlesource.com/chromium/src.git/+log/2f74454086a5..b7bb5840cba2

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/chromium-skia-autoroll
Please CC tdenniston@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: skia/skia.primary:Perf-Mac10.13-Clang-MacBookPro11.5-GPU-RadeonHD8870M-x86_64-Release-All-CommandBuffer;skia/skia.primary:Test-Mac10.13-Clang-MacBookPro11.5-GPU-RadeonHD8870M-x86_64-Debug-All-CommandBuffer
Tbr: tdenniston@google.com
Change-Id: I929015ffa35c35d65eb79bd9f57c4e236a77f882
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/294450
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 6b0239b..01416ad 100644
--- a/DEPS
+++ b/DEPS
@@ -43,7 +43,7 @@
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@47af7c547f8551bd25424e56354a2ae1e9062859",
 
   "../src": {
-    "url": "https://chromium.googlesource.com/chromium/src.git@2f74454086a50ba7731b4e0fd8d63e653f5a1251",
+    "url": "https://chromium.googlesource.com/chromium/src.git@b7bb5840cba2cd0b5958b737813c7d135da94e76",
     "condition": "checkout_chromium",
   },
 }