Open OWNERShip of sdk_forward_declarations.

BUG=405076
TEST=none

Review URL: https://codereview.chromium.org/485193002

Cr-Commit-Position: refs/heads/master@{#290725}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290725 0039d316-1c4b-4281-b951-d872f2087c98

base/mac/OWNERS

 mark@chromium.org
 thakis@chromium.org
+
+# sdk_forward_declarations.[h|mm] will likely need to be modified by Cocoa
+# developers in general; keep in sync with OWNERS of //chrome/browser/ui/cocoa.
+per-file sdk_forward_declarations.*=asvitkine@chromium.org
+per-file sdk_forward_declarations.*=avi@chromium.org
+per-file sdk_forward_declarations.*=groby@chromium.org
+per-file sdk_forward_declarations.*=jeremy@chromium.org
+per-file sdk_forward_declarations.*=mark@chromium.org
+per-file sdk_forward_declarations.*=rohitrao@chromium.org
+per-file sdk_forward_declarations.*=rsesek@chromium.org
+per-file sdk_forward_declarations.*=shess@chromium.org
+per-file sdk_forward_declarations.*=thakis@chromium.org