media: Fix gn deps on media/gpu/* targets
media: Fix gn deps on media/gpu/* targets

Add an missing dependency.

BUG=599578
TEST=gn check //media/gpu/* is clean

Review-Url: https://codereview.chromium.org/1973863005
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#393405}

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