Image Capture: add |points_of_interest| to mojo and wire it to IDL layer
This CL adds an array<Point2D> |points_of_interest| member
to image_capture.mojom and wires the use of the equivalent
members from idl, i.e. points of interest are:
- cached (as a constraint) when being set via applyConstraints(),
and produced upon getConstraints();
- cached (as status) when being read back from the mojo pipe,
together with other Capabilities, and produced upon request
on getSettings().
LayoutTests updated. The only platform supporting points
of interest currently is Android -- will be updated
in a subsequent CL.
BUG=700607
Review-Url: https://codereview.chromium.org/2795693004
Cr-Commit-Position: refs/heads/master@{#461629}
7 files changed
