Remove ImageCapture.setOptions()

Remove ImageCapture.setOptions() from idl
and related code according to [1].

[1] - https://github.com/w3c/mediacapture-image/pull/150/files#diff-ec9cfa5f3f35ec1f84feb2e59686c34dL54

Blink Dev Intent Thread - https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/tPbZ0eaO-yw

BUG=771283

Change-Id: I2098dac37f47bdc31840fcd54fe421f7834b5442
Reviewed-on: https://chromium-review.googlesource.com/699959
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: NIKHIL SAHNI <nikhil.sahni@samsung.com>
Cr-Commit-Position: refs/heads/master@{#530488}
7 files changed