Added JsonMessage to the control channel.

remoting/protocol/protocol_mock_objects.h

Index: remoting/protocol/protocol_mock_objects.h
diff --git a/remoting/protocol/protocol_mock_objects.h b/remoting/protocol/protocol_mock_objects.h
index 74435dbb486a5c48d0957ca348ade5c7cd5b2203..16bb8663d7fdf60868cc25b83d4aaa92eee1865c 100644
--- a/remoting/protocol/protocol_mock_objects.h
+++ b/remoting/protocol/protocol_mock_objects.h
@@ -114,6 +114,7 @@ class MockHostStub : public HostStub {
   MOCK_METHOD1(SetCapabilities, void(const Capabilities& capabilities));
   MOCK_METHOD1(RequestPairing,
                void(const PairingRequest& pairing_request));
+  MOCK_METHOD1(DeliverClientMessage, void(const ExtensionMessage& message));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockHostStub);
@@ -128,6 +129,7 @@ class MockClientStub : public ClientStub {
   MOCK_METHOD1(SetCapabilities, void(const Capabilities& capabilities));
   MOCK_METHOD1(SetPairingResponse,
                void(const PairingResponse& pairing_response));
+  MOCK_METHOD1(DeliverHostMessage, void(const ExtensionMessage& message));
 
   // ClipboardStub mock implementation.
   MOCK_METHOD1(InjectClipboardEvent, void(const ClipboardEvent& event));