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This passes the value of |use_video_overlay_for_embedded_encrypted_video| from RendererPreferences to requestMediaKeySystemAccess() so that it can correctly block either non-hardware-secure codecs or hardware-secure codecs.

BUG=467779

Review URL: https://codereview.chromium.org/1124863005

Cr-Commit-Position: refs/heads/master@{#329329}