| # Generic Sensors, //content part |
| |
| This directory contains part of the [Generic Sensors API](https://w3c.github.io/sensors) implementation in Chromium. See the [Blink README.md](/third_party/blink/renderer/modules/sensor/README.md) and the [services README.md](/services/device/generic_sensor/README.md) for more information about the architecture. |
| |
| From a spec perspective, the code in `SensorProviderProxyImpl` implements the following steps together with Blink: |
| |
| * [Check sensor policy-controlled features](https://w3c.github.io/sensors/#check-sensor-policy-controlled-features). |
| * [Request sensor access](https://w3c.github.io/sensors/#request-sensor-access). |
| |
| `//content/browser/generic_sensor` implements permission checks invoked by the Blink code, and acts as a bridge between Blink and `//services/device/generic_sensor`. When code in Blink invokes `SensorProvider::GetSensor()`, it reaches `SensorProviderProxyImpl::GetSensor()` in `//content/browser/generic_sensor` rather than `SensorProviderImpl::GetSensor()` in `//services/device/generic_sensor`. If all permission checks pass, `SensorProviderProxyImpl::GetSensor()` will forward the request from Blink to the `//services` layer by invoking `SensorProviderImpl::GetSensor()`. |
| |
| This directory also contains a few browser tests for the permission checks in `generic_sensor_browsertest.cc`. They are complemented by [`device_sensor_browsertest.cc`](/content/browser/device_sensors/device_sensor_browsertest.cc). |
