Keep two empty lines between declarations for cpp files

src/stub-cache.cc

 // Copyright 2012 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 2027 matching lines @@
   if (lookup->IsFound() &&
       lookup->IsCacheable() &&
       lookup->type() == CONSTANT_FUNCTION) {
     // We only optimize constant function calls.
     Initialize(Handle<JSFunction>(lookup->GetConstantFunction()));
   } else {
     Initialize(Handle<JSFunction>::null());
   }
 }
 
+
 CallOptimization::CallOptimization(Handle<JSFunction> function) {
   Initialize(function);
 }
 
 
 int CallOptimization::GetPrototypeDepthOfExpectedType(
     Handle<JSObject> object,
     Handle<JSObject> holder) const {
   ASSERT(is_simple_api_call());
   if (expected_receiver_type_.is_null()) return 0;
@@ skipping 42 matching lines @@
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(signature->receiver()));
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal