diff --git a/mock_proxy_resolver.h b/mock_proxy_resolver.h
new file mode 100644
index 0000000..0595f5a
--- /dev/null
+++ b/mock_proxy_resolver.h
@@ -0,0 +1,38 @@
+//
+// 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 UPDATE_ENGINE_MOCK_PROXY_RESOLVER_H_
+#define UPDATE_ENGINE_MOCK_PROXY_RESOLVER_H_
+
+#include <string>
+
+#include <gmock/gmock.h>
+
+#include "update_engine/proxy_resolver.h"
+
+namespace chromeos_update_engine {
+
+class MockProxyResolver : public ProxyResolver {
+ public:
+  MOCK_METHOD3(GetProxiesForUrl,
+               bool(const std::string& url,
+                    ProxiesResolvedFn callback,
+                    void* data));
+};
+
+}  // namespace chromeos_update_engine
+
+#endif  // UPDATE_ENGINE_MOCK_PROXY_RESOLVER_H_