Roll chromium_revision c86a4e2..27af50f (356002:356022)

Change log: https://chromium.googlesource.com/chromium/src/+log/c86a4e2..27af50f
Full diff: https://chromium.googlesource.com/chromium/src/+/c86a4e2..27af50f

No dependencies changed.
No update to Clang.

TBR=
CQ_EXTRA_TRYBOTS=tryserver.webrtc:win_baremetal,mac_baremetal,linux_baremetal

Review URL: https://codereview.webrtc.org/1425623002

Cr-Commit-Position: refs/heads/master@{#10404}
diff --git a/DEPS b/DEPS
index e6e3f29..316d14e 100644
--- a/DEPS
+++ b/DEPS
@@ -6,7 +6,7 @@
 vars = {
   'extra_gyp_flag': '-Dextra_gyp_flag=0',
   'chromium_git': 'https://chromium.googlesource.com',
-  'chromium_revision': 'c86a4e2b90d2e93345de382fbbe0773d9ee98017',
+  'chromium_revision': '27af50fa8c583cce01ef87827df4fd1ac98480b5',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than