[Sensors] Consider maximum supported frequency

device/generic_sensor/platform_sensor_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_ANDROID_H_
 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_ANDROID_H_
 
 #include "device/generic_sensor/platform_sensor.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/ref_counted.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace device {
 
 class PlatformSensorAndroid : public PlatformSensor {
  public:
   // Register C++ methods exposed to Java using JNI.
   static bool RegisterJNI(JNIEnv* env);
 
   PlatformSensorAndroid(mojom::SensorType type,
                         mojo::ScopedSharedBufferMapping mapping,
                         PlatformSensorProvider* provider,
                         const base::android::JavaRef<jobject>& java_sensor);
 
   mojom::ReportingMode GetReportingMode() override;
   PlatformSensorConfiguration GetDefaultConfiguration() override;
+  double GetMaximumSupportedFrequency() override;
 
   void NotifyPlatformSensorError(JNIEnv*,
                                  const base::android::JavaRef<jobject>& caller);
 
   void UpdatePlatformSensorReading(
       JNIEnv*,
       const base::android::JavaRef<jobject>& caller,
       jdouble timestamp,
       jdouble value1,
       jdouble value2,
       jdouble value3);
 
  protected:
   ~PlatformSensorAndroid() override;
   bool StartSensor(const PlatformSensorConfiguration& configuration) override;
   void StopSensor() override;
   bool CheckSensorConfiguration(
       const PlatformSensorConfiguration& configuration) override;
 
  private:
   // Java object org.chromium.device.sensors.PlatformSensor
   base::android::ScopedJavaGlobalRef<jobject> j_object_;
   DISALLOW_COPY_AND_ASSIGN(PlatformSensorAndroid);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_ANDROID_H_