diff --git a/gnss/1.0/default/AGnss.h b/gnss/1.0/default/AGnss.h
new file mode 100644
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+++ b/gnss/1.0/default/AGnss.h
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+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_AGnss_H_
+#define android_hardware_gnss_V1_0_AGnss_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IAGnss.h>
+#include <hardware/gps_internal.h>
+#include <hidl/Status.h>
+#include <netinet/in.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IAGnss;
+using ::android::hardware::gnss::V1_0::IAGnssCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Extended interface for AGNSS support. Also contains wrapper methods to allow
+ * methods from IAGnssCallback interface to be passed into the conventional
+ * implementation of the GNSS HAL.
+ */
+struct AGnss : public IAGnss {
+    AGnss(const AGpsInterface* agpsIface);
+    ~AGnss();
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IAGnss interface follow.
+     * These declarations were generated from IAGnss.hal.
+     */
+    Return<void> setCallback(const sp<IAGnssCallback>& callback) override;
+    Return<bool> dataConnClosed() override;
+    Return<bool> dataConnFailed() override;
+    Return<bool> setServer(IAGnssCallback::AGnssType type,
+                         const hidl_string& hostname, int32_t port) override;
+    Return<bool> dataConnOpen(const hidl_string& apn,
+                                           IAGnss::ApnIpType apnIpType) override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IAGnss base class.
+     */
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+    static void statusCb(AGpsStatus* status);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static AGpsCallbacks sAGnssCb;
+
+ private:
+    const AGpsInterface* mAGnssIface = nullptr;
+    static sp<IAGnssCallback> sAGnssCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_AGnss_H_