Keep two empty lines between declarations for cpp files

src/gdb-jit.cc

 // Copyright 2010 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 1997 matching lines @@
 
   if (!name.is_null() && name->IsString()) {
     SmartArrayPointer<char> name_cstring =
         Handle<String>::cast(name)->ToCString(DISALLOW_NULLS);
     AddCode(*name_cstring, *code, GDBJITInterface::FUNCTION, *script, info);
   } else {
     AddCode("", *code, GDBJITInterface::FUNCTION, *script, info);
   }
 }
 
+
 static void AddUnwindInfo(CodeDescription* desc) {
 #if V8_TARGET_ARCH_X64
   if (desc->tag() == GDBJITInterface::FUNCTION) {
     // To avoid propagating unwinding information through
     // compilation pipeline we use an approximation.
     // For most use cases this should not affect usability.
     static const int kFramePointerPushOffset = 1;
     static const int kFramePointerSetOffset = 4;
     static const int kFramePointerPopOffset = -3;
 
@@ skipping 161 matching lines @@
   ScopedLock lock(mutex.Pointer());
   ASSERT(!IsLineInfoTagged(line_info));
   HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true);
   ASSERT(e->value == NULL);
   e->value = TagLineInfo(line_info);
 }
 
 
 } }  // namespace v8::internal
 #endif