Mojo C++ bindings: Generate InterfaceHandle<> instead of InterfacePtr<>.

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

 // Copyright 2013 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 <utility>
 
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/utility/run_loop.h"
@@ skipping 135 matching lines @@
  public:
   ~ReentrantServiceImpl() override {}
 
   explicit ReentrantServiceImpl(InterfaceRequest<sample::Service> request)
       : call_depth_(0), max_call_depth_(0), binding_(this, request.Pass()) {}
 
   int max_call_depth() { return max_call_depth_; }
 
   void Frobinate(sample::FooPtr foo,
                  sample::Service::BazOptions baz,
-                 sample::PortPtr port,
+                 mojo::InterfaceHandle<sample::Port> port,
                  const sample::Service::FrobinateCallback& callback) override {
     max_call_depth_ = std::max(++call_depth_, max_call_depth_);
     if (call_depth_ == 1) {
       EXPECT_TRUE(binding_.WaitForIncomingMethodCall());
     }
     call_depth_--;
     callback.Run(5);
   }
 
   void GetPort(mojo::InterfaceRequest<sample::Port> port) override {}
@@ skipping 489 matching lines @@
   // While B & C have fallen out of scope, the pipes will remain until they are
   // flushed.
   EXPECT_FALSE(a_impl.d_called());
   PumpMessages();
   EXPECT_TRUE(a_impl.d_called());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo