[sensors] [win] Implement ambient light sensor for Windows platform
This CL adds implementation for ambient light sensor on Windows platform
and introduces adaptation layer between Generic Sensor and Windows Sensor
APIs.
Three new classes are introduced:
* PlatformSensorProviderWin: creates PlatformSensorWin instances and manages
sensor thread where all Windows Sensor API COM objects are running.
* PlatformSensorWin: Uses PlatformSensorReaderWin to receive notifications
about sensor reading and state change updates. Lives on IPC thread.
* PlatformSensorReaderWin - Uses ISensor COM interface to get sensor reading
and state change updates. Lives on sensor thread.
Unit tests are added to test new functionality.
BUG=606766
Review-Url: https://codereview.chromium.org/2447973003
Cr-Commit-Position: refs/heads/master@{#429536}
11 files changed
