Roll chromium_revision bff4606..6e5b8cb (365226:365419)

Change log: https://chromium.googlesource.com/chromium/src/+log/bff4606..6e5b8cb
Full diff: https://chromium.googlesource.com/chromium/src/+/bff4606..6e5b8cb

Changed dependencies:
* src/third_party/libvpx_new/source/libvpx: https://chromium.googlesource.com/webm/libvpx.git/+log/2383154..ecb8dff
DEPS diff: https://chromium.googlesource.com/chromium/src/+/bff4606..6e5b8cb/DEPS

No update to Clang.

TBR=marpan@webrtc.org, stefan@webrtc.org,

Review URL: https://codereview.webrtc.org/1530823002

Cr-Commit-Position: refs/heads/master@{#11041}
diff --git a/DEPS b/DEPS
index 9dec3a0..bb758cf 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': 'bff460660c6a1f24141f379c998b4fa774dc6691',
+  'chromium_revision': '6e5b8cba7511ceba6d3876ec8820b862ac045df8',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than