Keep two empty lines between declarations for cpp files

src/frames.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 184 matching lines @@
 
 
 void StackTraceFrameIterator::Advance() {
   while (true) {
     JavaScriptFrameIterator::Advance();
     if (done()) return;
     if (IsValidFrame()) return;
   }
 }
 
+
 bool StackTraceFrameIterator::IsValidFrame() {
     if (!frame()->function()->IsJSFunction()) return false;
     Object* script = JSFunction::cast(frame()->function())->shared()->script();
     // Don't show functions from native scripts to user.
     return (script->IsScript() &&
             Script::TYPE_NATIVE != Script::cast(script)->type()->value());
 }
 
 
 // -------------------------------------------------------------------------
@@ skipping 1346 matching lines @@
 
 void SetUpJSCallerSavedCodeData() {
   int i = 0;
   for (int r = 0; r < kNumRegs; r++)
     if ((kJSCallerSaved & (1 << r)) != 0)
       caller_saved_code_data.reg_code[i++] = r;
 
   ASSERT(i == kNumJSCallerSaved);
 }
 
+
 int JSCallerSavedCode(int n) {
   ASSERT(0 <= n && n < kNumJSCallerSaved);
   return caller_saved_code_data.reg_code[n];
 }
 
 
 #define DEFINE_WRAPPER(type, field)                              \
 class field##_Wrapper : public ZoneObject {                      \
  public:  /* NOLINT */                                           \
   field##_Wrapper(const field& original) : frame_(original) {    \
@@ skipping 12 matching lines @@
   }
 
   switch (frame->type()) {
     STACK_FRAME_TYPE_LIST(FRAME_TYPE_CASE)
     default: UNREACHABLE();
   }
 #undef FRAME_TYPE_CASE
   return NULL;
 }
 
+
 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone) {
   ZoneList<StackFrame*> list(10, zone);
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 } }  // namespace v8::internal