Roll chromium_revision 4bca52942c..40ccb25811 (440045:440063)

Change log: https://chromium.googlesource.com/chromium/src/+log/4bca52942c..40ccb25811
Full diff: https://chromium.googlesource.com/chromium/src/+/4bca52942c..40ccb25811

No dependencies changed.
No update to Clang.

TBR=
BUG=None

Review-Url: https://codereview.webrtc.org/2593583004
Cr-Commit-Position: refs/heads/master@{#15734}
diff --git a/DEPS b/DEPS
index 86b9b3d..3d74a1d 100644
--- a/DEPS
+++ b/DEPS
@@ -5,7 +5,7 @@
 
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
-  'chromium_revision': '4bca52942ca29189fca88b1ee30b0746299620b7',
+  'chromium_revision': '40ccb2581137efc2fc7d2a1041073fa00caed75a',
 }
 
 deps = {