Keep two empty lines between declarations for cpp files

src/builtins.cc

Index: src/builtins.cc
===================================================================
--- src/builtins.cc	(revision 15486)
+++ src/builtins.cc	(working copy)
@@ -182,6 +182,7 @@
   return result;
 }
 
+
 // ----------------------------------------------------------------------------
 
 BUILTIN(Illegal) {
@@ -1153,6 +1154,7 @@
       "strict_poison_pill", HandleVector<Object>(NULL, 0)));
 }
 
+
 // -----------------------------------------------------------------------------
 //
 
@@ -1432,14 +1434,17 @@
   KeyedLoadIC::GeneratePreMonomorphic(masm);
 }
 
+
 static void Generate_KeyedLoadIC_IndexedInterceptor(MacroAssembler* masm) {
   KeyedLoadIC::GenerateIndexedInterceptor(masm);
 }
 
+
 static void Generate_KeyedLoadIC_NonStrictArguments(MacroAssembler* masm) {
   KeyedLoadIC::GenerateNonStrictArguments(masm);
 }
 
+
 static void Generate_StoreIC_Slow(MacroAssembler* masm) {
   StoreIC::GenerateSlow(masm);
 }
@@ -1539,14 +1544,17 @@
   KeyedStoreIC::GenerateInitialize(masm);
 }
 
+
 static void Generate_KeyedStoreIC_NonStrictArguments(MacroAssembler* masm) {
   KeyedStoreIC::GenerateNonStrictArguments(masm);
 }
 
+
 static void Generate_TransitionElementsSmiToDouble(MacroAssembler* masm) {
   KeyedStoreIC::GenerateTransitionElementsSmiToDouble(masm);
 }
 
+
 static void Generate_TransitionElementsDoubleToObject(MacroAssembler* masm) {
   KeyedStoreIC::GenerateTransitionElementsDoubleToObject(masm);
 }
@@ -1716,6 +1724,7 @@
 #undef DEF_FUNCTION_PTR_A
 }
 
+
 void Builtins::SetUp(bool create_heap_objects) {
   ASSERT(!initialized_);
   Isolate* isolate = Isolate::Current();