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

mojo/common/trace_provider_impl.h

 // Copyright 2015 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_COMMON_TRACE_PROVIDER_IMPL_H_
 #define MOJO_COMMON_TRACE_PROVIDER_IMPL_H_
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/services/tracing/interfaces/tracing.mojom.h"
 
 namespace mojo {
 
 class TraceProviderImpl : public tracing::TraceProvider {
  public:
   TraceProviderImpl();
   ~TraceProviderImpl() override;
 
   void Bind(InterfaceRequest<tracing::TraceProvider> request);
 
   // Enable tracing without waiting for an inbound connection. It will stop if
   // no TraceRecorder is sent within a set time.
   void ForceEnableTracing();
 
  private:
   // tracing::TraceProvider implementation:
-  void StartTracing(const String& categories,
-                    tracing::TraceRecorderPtr recorder) override;
+  void StartTracing(
+      const String& categories,
+      mojo::InterfaceHandle<tracing::TraceRecorder> recorder) override;
   void StopTracing() override;
 
   void SendChunk(const scoped_refptr<base::RefCountedString>& events_str,
                  bool has_more_events);
 
   void DelayedStop();
   // Stop the collection of traces if no external connection asked for them yet.
   void StopIfForced();
 
   Binding<tracing::TraceProvider> binding_;
   bool tracing_forced_;
   tracing::TraceRecorderPtr recorder_;
 
   base::WeakPtrFactory<TraceProviderImpl> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(TraceProviderImpl);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_COMMON_TRACE_PROVIDER_IMPL_H_