[Sensors] 'onerror' event implementation

third_party/WebKit/Source/modules/sensor/SensorProxy.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 SensorProxy_h
 #define SensorProxy_h
 
+#include "core/dom/ExceptionCode.h"
 #include "device/generic_sensor/public/interfaces/sensor.mojom-blink.h"
 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class SensorProviderProxy;
 
 // This class wraps 'Sensor' mojo interface and used by multiple
 // JS sensor instances of the same type (within a single frame).
 class SensorProxy final : public GarbageCollectedFinalized<SensorProxy>,
                           public device::mojom::blink::SensorClient {
   USING_PRE_FINALIZER(SensorProxy, dispose);
   WTF_MAKE_NONCOPYABLE(SensorProxy);
 
  public:
   class Observer : public GarbageCollectedMixin {
    public:
     // Has valid 'Sensor' binding, {add, remove}Configuration()
     // methods can be called.
     virtual void onSensorInitialized() {}
     // Platfrom sensort reading has changed (for 'ONCHANGE' reporting mode).
     virtual void onSensorReadingChanged() {}
     // An error has occurred.
-    virtual void onSensorError() {}
+    virtual void onSensorError(ExceptionCode,
+                               const String& sanitizedMessage,
+                               const String& unsanitizedMessage) {}
   };
 
   ~SensorProxy();
 
   void dispose();
 
   void addObserver(Observer*);
   void removeObserver(Observer*);
 
   void initialize();
@@ skipping 31 matching lines @@
 
  private:
   friend class SensorProviderProxy;
   SensorProxy(device::mojom::blink::SensorType, SensorProviderProxy*);
 
   // device::mojom::blink::SensorClient overrides.
   void RaiseError() override;
   void SensorReadingChanged() override;
 
   // Generic handler for a fatal error.
-  void handleSensorError();
+  void handleSensorError(ExceptionCode = UnknownError,
+                         const String& sanitizedMessage = String(),
+                         const String& unsanitizedMessage = String());
 
   void onSensorCreated(device::mojom::blink::SensorInitParamsPtr,
                        device::mojom::blink::SensorClientRequest);
 
   device::mojom::blink::SensorType m_type;
   device::mojom::blink::ReportingMode m_mode;
   Member<SensorProviderProxy> m_provider;
   using ObserversSet = HeapHashSet<WeakMember<Observer>>;
   ObserversSet m_observers;
 
   device::mojom::blink::SensorPtr m_sensor;
   device::mojom::blink::SensorConfigurationPtr m_defaultConfig;
   mojo::Binding<device::mojom::blink::SensorClient> m_clientBinding;
 
   enum State { Uninitialized, Initializing, Initialized };
   State m_state;
   mojo::ScopedSharedBufferHandle m_sharedBufferHandle;
   mojo::ScopedSharedBufferMapping m_sharedBuffer;
   Reading m_reading;
   bool m_suspended;
 };
 
 }  // namespace blink
 
 #endif  // SensorProxy_h