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

services/dart/dart_tracing.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 SERVICES_DART_DART_TRACING_H_
 #define SERVICES_DART_DART_TRACING_H_
 
 #include "base/trace_event/trace_event.h"
 #include "mojo/common/tracing_impl.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
@@ skipping 10 matching lines @@
 
 class DartTraceProvider : public tracing::TraceProvider {
  public:
   DartTraceProvider();
   ~DartTraceProvider() override;
 
   void Bind(mojo::InterfaceRequest<tracing::TraceProvider> request);
 
  private:
   // tracing::TraceProvider implementation:
-  void StartTracing(const mojo::String& categories,
-                    tracing::TraceRecorderPtr recorder) override;
+  void StartTracing(
+      const mojo::String& categories,
+      mojo::InterfaceHandle<tracing::TraceRecorder> recorder) override;
   void StopTracing() override;
 
   void SplitAndRecord(char* data, size_t length);
 
   mojo::Binding<tracing::TraceProvider> binding_;
   tracing::TraceRecorderPtr recorder_;
 
   DISALLOW_COPY_AND_ASSIGN(DartTraceProvider);
 };
 
@@ skipping 13 matching lines @@
                mojo::InterfaceRequest<tracing::TraceProvider> request) override;
  private:
   DartTraceProvider provider_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(DartTracingImpl);
 };
 
 }  // namespace dart
 
 #endif  // SERVICES_DART_DART_TRACING_H_