Adds GeolocationFeature for Blimp Geolocation project.

blimp/client/feature/mock_location_provider.cc

Index: blimp/client/feature/mock_location_provider.cc
diff --git a/blimp/client/feature/mock_location_provider.cc b/blimp/client/feature/mock_location_provider.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c514c62629991612e0ee7a12ea35c6d82343ff52
--- /dev/null
+++ b/blimp/client/feature/mock_location_provider.cc
@@ -0,0 +1,20 @@
+// 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.
+
+#include "blimp/client/feature/mock_location_provider.h"
+
+namespace blimp {
+namespace client {
+
+MockLocationProvider::MockLocationProvider() {}
+
+MockLocationProvider::~MockLocationProvider() {}
+
+void MockLocationProvider::SetUpdateCallback(
+    const LocationProviderUpdateCallback& callback) {
+  callback_ = callback;
+}
+
+}  // namespace client
+}  // namespace blimp