Keep two empty lines between declarations for cpp files

src/extensions/i18n/collator.cc

 // Copyright 2013 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 58 matching lines @@
   // this method is used as the weak callback for persistent handles not
   // pointing to a collator.
   v8::HandleScope handle_scope(isolate);
   v8::Local<v8::Object> handle = v8::Local<v8::Object>::New(isolate, *object);
   delete UnpackCollator(handle);
 
   // Then dispose of the persistent handle to JS object.
   object->Dispose(isolate);
 }
 
+
 // Throws a JavaScript exception.
 static v8::Handle<v8::Value> ThrowUnexpectedObjectError() {
   // Returns undefined, and schedules an exception to be thrown.
   return v8::ThrowException(v8::Exception::Error(
       v8::String::New("Collator method called on an object "
                       "that is not a Collator.")));
 }
 
+
 // When there's an ICU error, throw a JavaScript error with |message|.
 static v8::Handle<v8::Value> ThrowExceptionForICUError(const char* message) {
   return v8::ThrowException(v8::Exception::Error(v8::String::New(message)));
 }
 
+
 // static
 void Collator::JSInternalCompare(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (args.Length() != 3 || !args[0]->IsObject() ||
       !args[1]->IsString() || !args[2]->IsString()) {
     v8::ThrowException(v8::Exception::SyntaxError(
         v8::String::New("Collator and two string arguments are required.")));
     return;
   }
 
@@ skipping 252 matching lines @@
                               v8::Handle<v8::Object> resolved) {
   UErrorCode status = U_ZERO_ERROR;
   if (UCOL_ON == collator->getAttribute(attribute, status)) {
     resolved->Set(v8::String::New(property), v8::Boolean::New(true));
   } else {
     resolved->Set(v8::String::New(property), v8::Boolean::New(false));
   }
 }
 
 }  // namespace v8_i18n