[Sensors] Align sensor reading updates and 'onchange' notification with rAF.

third_party/WebKit/Source/modules/sensor/Sensor.h

Index: third_party/WebKit/Source/modules/sensor/Sensor.h
diff --git a/third_party/WebKit/Source/modules/sensor/Sensor.h b/third_party/WebKit/Source/modules/sensor/Sensor.h
index 1e2e7efb6cfa605bc131bc7ad1dd6be71b2771a8..b59979731997a6ed46f24d0be826fb5a0bf68f58 100644
--- a/third_party/WebKit/Source/modules/sensor/Sensor.h
+++ b/third_party/WebKit/Source/modules/sensor/Sensor.h
@@ -20,7 +20,6 @@ namespace blink {
 class ExceptionState;
 class ExecutionContext;
 class SensorReading;
-class SensorUpdateNotificationStrategy;
 
 class Sensor : public EventTargetWithInlineData,
                public ActiveScriptWrappable<Sensor>,
@@ -83,11 +82,10 @@ class Sensor : public EventTargetWithInlineData,
 
   // SensorController::Observer overrides.
   void onSensorInitialized() override;
-  void onSensorReadingChanged() override;
+  void onSensorReadingChanged(double timestamp) override;
   void onSensorError(ExceptionCode,
                      const String& sanitizedMessage,
                      const String& unsanitizedMessage) override;
-  void onSuspended() override;
 
   void onStartRequestCompleted(bool);
   void onStopRequestCompleted(bool);
@@ -95,8 +93,6 @@ class Sensor : public EventTargetWithInlineData,
   void startListening();
   void stopListening();
 
-  void onSensorUpdateNotification();
-
   void updateState(SensorState newState);
   void reportError(ExceptionCode = UnknownError,
                    const String& sanitizedMessage = String(),
@@ -111,9 +107,9 @@ class Sensor : public EventTargetWithInlineData,
   device::mojom::blink::SensorType m_type;
   SensorState m_state;
   Member<SensorProxy> m_sensorProxy;
-  std::unique_ptr<SensorUpdateNotificationStrategy> m_sensorUpdateNotifier;
   device::SensorReading m_storedData;
   SensorConfigurationPtr m_configuration;
+  double m_lastUpdateTimestamp;
 };
 
 }  // namespace blink