[sensors] Add a browser test to sanity check ambient light sensor.

device/generic_sensor/platform_sensor_provider_android.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_ANDROID_H_
+#define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_ANDROID_H_
+
+#include "device/generic_sensor/platform_sensor_provider.h"
+
+#include "base/android/scoped_java_ref.h"
+
+namespace device {
+
+class PlatformSensorProviderAndroid : public PlatformSensorProvider {
+ public:
+  PlatformSensorProviderAndroid();
+  ~PlatformSensorProviderAndroid() override;
+
+  static PlatformSensorProviderAndroid* GetInstance();
+
+ protected:
+  void CreateSensorInternal(mojom::SensorType type,
+                            mojo::ScopedSharedBufferMapping mapping,
+                            const CreateSensorCallback& callback) override;
+
+ private:
+  // Java object org.chromium.device.sensors.PlatformSensorProvider
+  base::android::ScopedJavaGlobalRef<jobject> j_object_;
+
+  DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderAndroid);
+};
+
+}  // namespace device
+
+#endif  // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_ANDROID_H_