GitLab

This CL:

- moves those two fellas (BarcodeDetectionImpl.java and
TextDetectionImpl.java) from //chrome to //services/shape_detection,
with some tiny adaptations.

- changes render_process_host_impl.cc to send requests to the
said service.

- adds a needed InterfaceRegistrar.java to //services/shape_detection
and some android-specific code to shape_detection_service.cc,
following the  //services/device model (BatteryMonitor, concretely).

No new code or functionality is intended in the ...Impl.java
files (except a small change in testing for GMS presence).

BUG=718275
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.mac:mac_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2855203003
Cr-Commit-Position: refs/heads/master@{#469424}