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

mojo/public/cpp/bindings/struct_ptr.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_STRUCT_PTR_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_STRUCT_PTR_H_
 
 #include <new>
 
 #include "mojo/public/cpp/environment/logging.h"
@@ skipping 10 matching lines @@
 };
 
 }  // namespace internal
 
 template <typename Struct>
 class StructPtr {
   MOJO_MOVE_ONLY_TYPE_FOR_CPP_03(StructPtr, RValue);
  public:
   typedef typename Struct::Data_ Data_;
 
-  StructPtr() : ptr_(NULL) {}
+  StructPtr() : ptr_(nullptr) {}
   ~StructPtr() {
     delete ptr_;
   }
 
-  StructPtr(RValue other) : ptr_(NULL) { Take(other.object); }
+  StructPtr(RValue other) : ptr_(nullptr) { Take(other.object); }
   StructPtr& operator=(RValue other) {
     Take(other.object);
     return *this;
   }
 
   template <typename U>
   U To() const {
     return TypeConverter<U, StructPtr>::Convert(*this);
   }
 
   void reset() {
     if (ptr_) {
       delete ptr_;
-      ptr_ = NULL;
+      ptr_ = nullptr;
     }
   }
 
-  bool is_null() const { return ptr_ == NULL; }
+  bool is_null() const { return ptr_ == nullptr; }
 
   Struct& operator*() const {
     MOJO_DCHECK(ptr_);
     return *ptr_;
   }
   Struct* operator->() const {
     MOJO_DCHECK(ptr_);
     return ptr_;
   }
   Struct* get() const { return ptr_; }
@@ skipping 82 matching lines @@
     Swap(other);
   }
 
   mutable Struct value_;
   bool is_null_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_STRUCT_PTR_H_