Turn some usages of NewArray with DeleteArray in the same scope into ScopedVector or SmartPointer.

src/api.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2167 matching lines @@
     } else {
       const char* prefix = "[object ";
       Local<String> str = Utils::ToLocal(class_name);
       const char* postfix = "]";
 
       int prefix_len = i::StrLength(prefix);
       int str_len = str->Length();
       int postfix_len = i::StrLength(postfix);
 
       int buf_len = prefix_len + str_len + postfix_len;
-      char* buf = i::NewArray<char>(buf_len);
+      i::ScopedVector<char> buf(buf_len);
 
       // Write prefix.
-      char* ptr = buf;
+      char* ptr = buf.start();
       memcpy(ptr, prefix, prefix_len * v8::internal::kCharSize);
       ptr += prefix_len;
 
       // Write real content.
       str->WriteAscii(ptr, 0, str_len);
       ptr += str_len;
 
       // Write postfix.
       memcpy(ptr, postfix, postfix_len * v8::internal::kCharSize);
 
       // Copy the buffer into a heap-allocated string and return it.
-      Local<String> result = v8::String::New(buf, buf_len);
-      i::DeleteArray(buf);
+      Local<String> result = v8::String::New(buf.start(), buf_len);
       return result;
     }
   }
 }
 
 
 bool v8::Object::Delete(v8::Handle<String> key) {
   ON_BAILOUT("v8::Object::Delete()", return false);
   ENTER_V8;
   HandleScope scope;
@@ skipping 2025 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* thread_local =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   thread_local->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal