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This CL changes the SUBRESOURCE_FITER which is not a valid category
type to SUBRESOURCE_FILTER which is valid.

BUG=716661
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2851933002
Cr-Commit-Position: refs/heads/master@{#468426}