Keep two empty lines between declarations for cpp files

test/cctest/test-regexp.cc

Index: test/cctest/test-regexp.cc
===================================================================
--- test/cctest/test-regexp.cc	(revision 15486)
+++ test/cctest/test-regexp.cc	(working copy)
@@ -94,6 +94,7 @@
   return output;
 }
 
+
 static bool CheckSimple(const char* input) {
   V8::Initialize(NULL);
   v8::HandleScope scope(v8::Isolate::GetCurrent());
@@ -112,6 +113,7 @@
   int max_match;
 };
 
+
 static MinMaxPair CheckMinMaxMatch(const char* input) {
   V8::Initialize(NULL);
   v8::HandleScope scope(v8::Isolate::GetCurrent());
@@ -377,6 +379,7 @@
   CHECK_MIN_MAX("a(?!bbb|bb)c", 2, 2);
 }
 
+
 TEST(ParserRegression) {
   CHECK_PARSE_EQ("[A-Z$-][x]", "(! [A-Z $ -] [x])");
   CHECK_PARSE_EQ("a{3,4*}", "(: 'a{3,' (# 0 - g '4') '}')");
@@ -659,6 +662,7 @@
   }
 }
 
+
 // Test of debug-only syntax.
 #ifdef DEBUG