Keep two empty lines between declarations for cpp files

test/cctest/test-profile-generator.cc

 // Copyright 2010 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 499 matching lines @@
     CHECK_EQ(NULL, token2_helper.Walk(&entry2));
     CHECK_EQ(NULL, token2_helper.Walk(&entry3));
   }
 }
 
 
 static inline i::Address ToAddress(int n) {
   return reinterpret_cast<i::Address>(n);
 }
 
+
 TEST(CodeMapAddCode) {
   CodeMap code_map;
   CodeEntry entry1(i::Logger::FUNCTION_TAG, "aaa");
   CodeEntry entry2(i::Logger::FUNCTION_TAG, "bbb");
   CodeEntry entry3(i::Logger::FUNCTION_TAG, "ccc");
   CodeEntry entry4(i::Logger::FUNCTION_TAG, "ddd");
   code_map.AddCode(ToAddress(0x1500), &entry1, 0x200);
   code_map.AddCode(ToAddress(0x1700), &entry2, 0x100);
   code_map.AddCode(ToAddress(0x1900), &entry3, 0x50);
   code_map.AddCode(ToAddress(0x1950), &entry4, 0x10);
@@ skipping 163 matching lines @@
 }
 
 
 static void CheckNodeIds(ProfileNode* node, int* expectedId) {
   CHECK_EQ((*expectedId)++, node->id());
   for (int i = 0; i < node->children()->length(); i++) {
     CheckNodeIds(node->children()->at(i), expectedId);
   }
 }
 
+
 TEST(SampleIds) {
   TestSetup test_setup;
   CpuProfilesCollection profiles;
   profiles.StartProfiling("", 1, true);
   ProfileGenerator generator(&profiles);
   CodeEntry* entry1 = profiles.NewCodeEntry(i::Logger::FUNCTION_TAG, "aaa");
   CodeEntry* entry2 = profiles.NewCodeEntry(i::Logger::FUNCTION_TAG, "bbb");
   CodeEntry* entry3 = profiles.NewCodeEntry(i::Logger::FUNCTION_TAG, "ccc");
   generator.code_map()->AddCode(ToAddress(0x1500), entry1, 0x200);
   generator.code_map()->AddCode(ToAddress(0x1700), entry2, 0x100);
@@ skipping 245 matching lines @@
   current = PickChild(current, "b");
   CHECK_NE(NULL, const_cast<v8::CpuProfileNode*>(current));
   CHECK_EQ(script_b->GetId(), current->GetScriptId());
 
   current = PickChild(current, "a");
   CHECK_NE(NULL, const_cast<v8::CpuProfileNode*>(current));
   CHECK_EQ(script_a->GetId(), current->GetScriptId());
 }