Roll chromium_revision dad6346..a02d286 (363782:364268)

Change log: https://chromium.googlesource.com/chromium/src/+log/dad6346..a02d286
Full diff: https://chromium.googlesource.com/chromium/src/+/dad6346..a02d286

No dependencies changed.
No update to Clang.

TBR=

Review URL: https://codereview.webrtc.org/1509323004

Cr-Commit-Position: refs/heads/master@{#10962}
diff --git a/DEPS b/DEPS
index 5340c0f..6ffcdc0 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': 'dad6346948dde45a6e86c614692256c746d9bfb1',
+  'chromium_revision': 'a02d286ca7ce39be455730c93ea332628e20dcd3',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than