Mojo: Implement support for |Foo&| mojom syntax

mojo/public/cpp/bindings/tests/sample_service_unittest.cc

 // 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.
 
 #include <algorithm>
 #include <ostream>
 #include <string>
 
 #include "mojo/public/interfaces/bindings/tests/sample_service.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 257 matching lines @@
 
     if (g_dump_message_as_text) {
       // Also dump the Foo structure and all of its members.
       std::cout << "Frobinate:" << std::endl;
       int depth = 1;
       Print(depth, "foo", foo);
       Print(depth, "baz", baz);
       Print(depth, "port", port.get());
     }
   }
+
+  virtual void GetPort(mojo::InterfaceRequest<Port> port_request)
+      MOJO_OVERRIDE {
+  }
 };
 
 class ServiceProxyImpl : public ServiceProxy {
  public:
   explicit ServiceProxyImpl(mojo::MessageReceiverWithResponder* receiver)
       : ServiceProxy(receiver) {
   }
 };
 
 class SimpleMessageReceiver : public mojo::MessageReceiverWithResponder {
@@ skipping 65 matching lines @@
   EXPECT_DOUBLE_EQ(1E10, full->a15);
   EXPECT_DOUBLE_EQ(-1.2E+20, full->a16);
   EXPECT_DOUBLE_EQ(1.23E-20, full->a17);
   EXPECT_TRUE(full->a18.is_null());
   EXPECT_TRUE(full->a19.is_null());
   EXPECT_TRUE(full->a20.is_null());
 }
 
 }  // namespace
 }  // namespace sample