Add GetMimeTypeFromFile to Mojo's network service.

mojo/services/network/network_service_impl.h

 // 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 MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_
 #define MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "mojo/application/public/cpp/app_lifetime_helper.h"
 #include "mojo/services/network/public/interfaces/network_service.mojom.h"
@@ skipping 22 matching lines @@
   void CreateTCPConnectedSocket(
       NetAddressPtr remote_address,
       ScopedDataPipeConsumerHandle send_stream,
       ScopedDataPipeProducerHandle receive_stream,
       InterfaceRequest<TCPConnectedSocket> client_socket,
       const CreateTCPConnectedSocketCallback& callback) override;
   void CreateUDPSocket(InterfaceRequest<UDPSocket> socket) override;
   void CreateHttpServer(NetAddressPtr local_address,
                         HttpServerDelegatePtr delegate,
                         const CreateHttpServerCallback& callback) override;
+  void GetMimeTypeFromFile(
+      const mojo::String& file_path,
+      const GetMimeTypeFromFileCallback& callback) override;
 
  private:
   NetworkContext* context_;
   scoped_ptr<mojo::AppRefCount> app_refcount_;
   GURL origin_;
   StrongBinding<NetworkService> binding_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_