Roll chromium_revision 07b4a8e..c511263 (352281:352322)

Change log: https://chromium.googlesource.com/chromium/src/+log/07b4a8e..c511263
Full diff: https://chromium.googlesource.com/chromium/src/+/07b4a8e..c511263

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/1384943002 .

Cr-Commit-Position: refs/heads/master@{#10172}
diff --git a/DEPS b/DEPS
index 82527c4..5e1f506 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': '07b4a8e9e6144cc69d2aabb63d5b58011af21965',
+  'chromium_revision': 'c511263253e1e84a07339f19e18cd1cefd4d70a6',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than