Roll chromium_revision 048b30171a..4b49e7bd43 (384783:384803)

Change log: https://chromium.googlesource.com/chromium/src/+log/048b30171a..4b49e7bd43
Full diff: https://chromium.googlesource.com/chromium/src/+/048b30171a..4b49e7bd43

No dependencies changed.
No update to Clang.

TBR=

Review URL: https://codereview.webrtc.org/1852043002

Cr-Commit-Position: refs/heads/master@{#12205}
diff --git a/DEPS b/DEPS
index d3a7eec..4dbe6eb 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': '048b30171ae6db3249101801d814b8f7a4b21c53',
+  'chromium_revision': '4b49e7bd432dc3e512579191afa5d3c85fcd4afe',
 }
 
 # NOTE: Use http rather than https; the latter can cause problems for users