Keep two empty lines between declarations for cpp files

src/handles.cc

Index: src/handles.cc
===================================================================
--- src/handles.cc	(revision 15486)
+++ src/handles.cc	(working copy)
@@ -499,6 +499,7 @@
   return right + script->line_offset()->value();
 }
 
+
 // Convert code position into column number.
 int GetScriptColumnNumber(Handle<Script> script, int code_pos) {
   int line_number = GetScriptLineNumber(script, code_pos);
@@ -513,6 +514,7 @@
   return code_pos - (prev_line_end_pos + 1);
 }
 
+
 int GetScriptLineNumberSafe(Handle<Script> script, int code_pos) {
   DisallowHeapAllocation no_allocation;
   if (!script->line_ends()->IsUndefined()) {