Mojo: NULL -> nullptr in mojo/public/cpp/bindings and also for the bindings generator.

mojo/public/cpp/bindings/lib/interface_impl_internal.h

 // 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.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_
 
 #include "mojo/public/cpp/bindings/error_handler.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/cpp/bindings/lib/filter_chain.h"
@@ skipping 12 matching lines @@
   virtual void OnConnectionEstablished() = 0;
   virtual void OnConnectionError() = 0;
 };
 
 template <typename Interface>
 class InterfaceImplState : public ErrorHandler {
  public:
   typedef typename Interface::Client Client;
 
   explicit InterfaceImplState(InterfaceImplBase<Interface>* instance)
-      : router_(NULL),
-        proxy_(NULL),
+      : router_(nullptr),
+        proxy_(nullptr),
         instance_bound_to_pipe_(false)
 #ifndef NDEBUG
         ,
         deleting_instance_due_to_error_(false)
 #endif
   {
     MOJO_DCHECK(instance);
     stub_.set_sink(instance);
   }
 
   virtual ~InterfaceImplState() {
 #ifndef NDEBUG
     MOJO_DCHECK(!instance_bound_to_pipe_ || deleting_instance_due_to_error_);
 #endif
     delete proxy_;
     if (router_) {
-      router_->set_error_handler(NULL);
+      router_->set_error_handler(nullptr);
       delete router_;
     }
   }
 
   void BindProxy(
       InterfacePtr<Interface>* ptr,
       bool instance_bound_to_pipe,
       const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter()) {
     MessagePipe pipe;
     ptr->Bind(pipe.handle0.Pass(), waiter);
@@ skipping 57 matching lines @@
   bool deleting_instance_due_to_error_;
 #endif
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(InterfaceImplState);
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_INTERFACE_IMPL_INTERNAL_H_