Add the first very basic bits of a geofencing API.

Source/modules/geolocation/Geolocation.cpp

Index: Source/modules/geolocation/Geolocation.cpp
diff --git a/Source/modules/geolocation/Geolocation.cpp b/Source/modules/geolocation/Geolocation.cpp
index 99035aa0297e45d985b8d1567330db5789db6ab1..57437ed10d06c6130250e17a617eddbfe482cd52 100644
--- a/Source/modules/geolocation/Geolocation.cpp
+++ b/Source/modules/geolocation/Geolocation.cpp
@@ -28,8 +28,12 @@
 #include "config.h"
 #include "modules/geolocation/Geolocation.h"
 
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "bindings/core/v8/ScriptState.h"
+#include "core/dom/DOMError.h"
 #include "core/dom/Document.h"
 #include "modules/geolocation/Coordinates.h"
+#include "modules/geolocation/GeofencingRegion.h"
 #include "modules/geolocation/GeolocationController.h"
 #include "modules/geolocation/GeolocationError.h"
 #include "modules/geolocation/GeolocationPosition.h"
@@ -681,4 +685,34 @@ void Geolocation::handlePendingPermissionNotifiers()
     }
 }
 
+ScriptPromise Geolocation::registerRegion(ScriptState* scriptState, GeofencingRegion* region)
+{
+    RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    resolver->reject(DOMError::create(NotSupportedError));
+
+    return promise;

[Peter Beverloo, 2014/07/10 13:17:28]

Could just use the ScriptPromise class here (dito in unregisterRegion and
getRegisteredRegions).

return ScriptPromise::rejectWithDOMException(scriptState,
DOMError::create(NotSupportedError));

[Marijn Kruisselbrink, 2014/07/10 15:11:01]

Done. Although I'll probably have to change this back to something using
ScriptPromiseResolver once I actually implement these methods, so not sure this
saves me much (but still good to know about what is possible in the promise
API).

+}
+
+ScriptPromise Geolocation::deregisterRegion(ScriptState* scriptState, const String& regionId)
+{
+    RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    resolver->reject(DOMError::create(NotSupportedError));
+
+    return promise;
+}
+
+ScriptPromise Geolocation::getRegisteredRegions(ScriptState* scriptState)
+{
+    RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromise promise = resolver->promise();
+
+    resolver->reject(DOMError::create(NotSupportedError));
+
+    return promise;
+}
+
 } // namespace WebCore