[sensors] Generic Sensors Framework blink side

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

Index: third_party/WebKit/Source/modules/sensor/SensorReading.h
diff --git a/third_party/WebKit/Source/modules/sensor/SensorReading.h b/third_party/WebKit/Source/modules/sensor/SensorReading.h
index 0796dfcdec4fa16b9fd6823083690ba18e726e0b..cc56835992d0e9efb80242497b1d2b7e6169ce6b 100644
--- a/third_party/WebKit/Source/modules/sensor/SensorReading.h
+++ b/third_party/WebKit/Source/modules/sensor/SensorReading.h
@@ -12,34 +12,36 @@
 
 namespace blink {
 
-class MODULES_EXPORT SensorReading : public GarbageCollectedFinalized<SensorReading>, public ScriptWrappable {
-    DEFINE_WRAPPERTYPEINFO();
+class ExecutionContext;
+class SensorProxy;
 
+class MODULES_EXPORT SensorReading
+    : public GarbageCollected<SensorReading>
+    , public ScriptWrappable {
+    DEFINE_WRAPPERTYPEINFO();
 public:
-    static SensorReading* create()
-    {
-        return new SensorReading;
-    }
-
-    static SensorReading* create(bool providesTimeStamp, DOMHighResTimeStamp timestamp)
-    {
-        return new SensorReading(providesTimeStamp, timestamp);
-    }
-
-    virtual ~SensorReading();
+    DECLARE_VIRTUAL_TRACE();
 
-    DOMHighResTimeStamp timeStamp(bool& isNull);
+    DOMHighResTimeStamp timeStamp() const;
 
-    void setTimeStamp(DOMHighResTimeStamp time) { m_timeStamp = time; }
+    enum UpdateStatus {
+        Updated,
+        Error,
+        Same
+    };
+    virtual UpdateStatus updateInternalData() = 0;
 
-    DECLARE_VIRTUAL_TRACE();
+    void attach(SensorProxy*);
+    void detach();
 
 protected:
-    bool m_canProvideTimeStamp;
-    DOMHighResTimeStamp m_timeStamp;
+    explicit SensorReading(ExecutionContext*);
+    // Returns timestamp obtained from the shared buffer.
+    virtual double platformTimeStamp() const = 0;
 
-    SensorReading();
-    SensorReading(bool providesTimeStamp, DOMHighResTimeStamp timestamp);
+protected:
+    WeakMember<SensorProxy> m_sensorProxy;
+    WeakMember<ExecutionContext> m_context;
 };
 
 } // namepsace blink