Keep two empty lines between declarations for cpp files

test/cctest/test-types.cc

Index: test/cctest/test-types.cc
===================================================================
--- test/cctest/test-types.cc	(revision 15486)
+++ test/cctest/test-types.cc	(working copy)
@@ -62,6 +62,7 @@
   CHECK(type2->Is(type1));
 }
 
+
 static void CheckSub(Handle<Type> type1, Handle<Type> type2) {
   CHECK(type1->Is(type2));
   CHECK(!type2->Is(type1));
@@ -70,6 +71,7 @@
   }
 }
 
+
 static void CheckUnordered(Handle<Type> type1, Handle<Type> type2) {
   CHECK(!type1->Is(type2));
   CHECK(!type2->Is(type1));
@@ -78,6 +80,7 @@
   }
 }
 
+
 static void CheckOverlap(Handle<Type> type1, Handle<Type> type2) {
   CHECK(type1->Maybe(type2));
   CHECK(type2->Maybe(type1));
@@ -86,6 +89,7 @@
   }
 }
 
+
 static void CheckDisjoint(Handle<Type> type1, Handle<Type> type2) {
   CHECK(!type1->Is(type2));
   CHECK(!type2->Is(type1));