Roll chromium_revision 681f0cd..354cc7d (351698:351828)

Clang version was not updated in this roll.

BUG=
TBR=

Review URL: https://codereview.webrtc.org/1375103003

Cr-Commit-Position: refs/heads/master@{#10142}
diff --git a/DEPS b/DEPS
index bd2b9d8..43e16bf 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': '681f0cd52075b890849f54b873f075d6cc92a4ef',
+  'chromium_revision': '354cc7dafcde00aeed85ffc26bfe3471406ee208',
 }
 
 # NOTE: Prefer revision numbers to tags for svn deps. Use http rather than