Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271705 0039d316-1c4b-4281-b951-d872f2087c98

.DEPS.git

@@ -9,7 +9,7 @@ vars = {
     'git_url':
          'https://chromium.googlesource.com',
     'webkit_rev':
-         '@1470f94004eb4bb9d769e9e550e97bab591f8262',
+         '@6efdc165ad73dd7fe63b05234b4ba6a699ca788f',
     'angle_revision':
          '28bcf4ffeb49322fa019e2778c1fdd20f61d9ea6'
 }