Pass through geofencing API calls to the content layer.

public/platform/WebGeofencingProvider.h

Index: public/platform/WebGeofencingProvider.h
diff --git a/public/platform/WebGeofencingProvider.h b/public/platform/WebGeofencingProvider.h
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+// Copyright 2014 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 WebGeofencingProvider_h
+#define WebGeofencingProvider_h
+
+#include "public/platform/WebCallbacks.h"
+#include "public/platform/WebVector.h"
+
+namespace blink {
+
+struct WebCircularGeofencingRegion;
+struct WebGeofencingError;
+struct WebGeofencingRegistration;
+class WebString;
+
+typedef WebCallbacks<void, WebGeofencingError> WebGeofencingCallbacks;
+typedef WebCallbacks<WebVector<WebGeofencingRegistration>, WebGeofencingError> WebGeofencingRegionsCallbacks;
+
+class WebGeofencingProvider {
+public:
+    virtual ~WebGeofencingProvider() { }
+
+    // Registers a region.
+    // Ownership of the WebGeofencingCallbacks is transferred to the client.
+    virtual void registerRegion(const WebString& regionId, const WebCircularGeofencingRegion&, WebGeofencingCallbacks*) = 0;
+
+    // Unregisters a region.
+    // Ownership of the WebGeofencingCallbacks is transferred to the client.
+    virtual void unregisterRegion(const WebString& regionId, WebGeofencingCallbacks*) = 0;
+
+    // Returns all the currently registered regions.
+    // Ownership of the WebGeofencingRegionsCallbacks is transferred to the client.
+    virtual void getRegisteredRegions(WebGeofencingRegionsCallbacks*) = 0;
+};
+
+} // namespace blink
+
+#endif // WebGeofencingProvider_h