[Sensors] Implement sensor data polling

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

Index: third_party/WebKit/Source/modules/sensor/SensorProxy.h
diff --git a/third_party/WebKit/Source/modules/sensor/SensorProxy.h b/third_party/WebKit/Source/modules/sensor/SensorProxy.h
index 401ae29b3f59ff6137304899ebbfe06c1d6a02d8..d49e087da0bcbb4775e7de6748aef1f325f2f620 100644
--- a/third_party/WebKit/Source/modules/sensor/SensorProxy.h
+++ b/third_party/WebKit/Source/modules/sensor/SensorProxy.h
@@ -49,6 +49,9 @@ public:
     void addConfiguration(device::mojom::blink::SensorConfigurationPtr, std::unique_ptr<Function<void(bool)>>);
     void removeConfiguration(device::mojom::blink::SensorConfigurationPtr, std::unique_ptr<Function<void(bool)>>);
 
+    void suspend();
+    void resume();
+
     device::mojom::blink::SensorType type() const { return m_type; }
     device::mojom::blink::ReportingMode reportingMode() const { return m_mode; }
 
@@ -95,6 +98,7 @@ private:
     mojo::ScopedSharedBufferHandle m_sharedBufferHandle;
     mojo::ScopedSharedBufferMapping m_sharedBuffer;
     Reading m_reading;
+    bool m_suspended;
 };
 
 } // namespace blink