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This CL enables two independent extensions to modify headers of HTTP responses in case they don't conflict (two extension try to edit the same header).


BUG=none
TEST=no


Review URL: http://codereview.chromium.org/8511063

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110900 0039d316-1c4b-4281-b951-d872f2087c98