Keep two empty lines between declarations for cpp files

src/heap-snapshot-generator.cc

 // Copyright 2013 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 447 matching lines @@
   entries_.Add(EntryInfo(id, addr, size));
   ASSERT(static_cast<uint32_t>(entries_.length()) > entries_map_.occupancy());
   return id;
 }
 
 
 void HeapObjectsMap::StopHeapObjectsTracking() {
   time_intervals_.Clear();
 }
 
+
 void HeapObjectsMap::UpdateHeapObjectsMap() {
   HEAP->CollectAllGarbage(Heap::kMakeHeapIterableMask,
                           "HeapSnapshotsCollection::UpdateHeapObjectsMap");
   HeapIterator iterator(heap_);
   for (HeapObject* obj = iterator.next();
        obj != NULL;
        obj = iterator.next()) {
     FindOrAddEntry(obj->address(), obj->Size());
   }
   RemoveDeadEntries();
@@ skipping 1506 matching lines @@
     group->info = NULL;  // Acquire info object ownership.
   }
   isolate->global_handles()->RemoveObjectGroups();
   isolate->heap()->CallGCEpilogueCallbacks(major_gc_type);
   // Record objects that are not in ObjectGroups, but have class ID.
   GlobalHandlesExtractor extractor(this);
   isolate->global_handles()->IterateAllRootsWithClassIds(&extractor);
   embedder_queried_ = true;
 }
 
+
 void NativeObjectsExplorer::FillImplicitReferences() {
   Isolate* isolate = Isolate::Current();
   List<ImplicitRefGroup*>* groups =
       isolate->global_handles()->implicit_ref_groups();
   for (int i = 0; i < groups->length(); ++i) {
     ImplicitRefGroup* group = groups->at(i);
     HeapObject* parent = *group->parent;
     int parent_entry =
         filler_->FindOrAddEntry(parent, native_entries_allocator_)->index();
     ASSERT(parent_entry != HeapEntry::kNoEntry);
@@ skipping 605 matching lines @@
 
 static void WriteUChar(OutputStreamWriter* w, unibrow::uchar u) {
   static const char hex_chars[] = "0123456789ABCDEF";
   w->AddString("\\u");
   w->AddCharacter(hex_chars[(u >> 12) & 0xf]);
   w->AddCharacter(hex_chars[(u >> 8) & 0xf]);
   w->AddCharacter(hex_chars[(u >> 4) & 0xf]);
   w->AddCharacter(hex_chars[u & 0xf]);
 }
 
+
 void HeapSnapshotJSONSerializer::SerializeString(const unsigned char* s) {
   writer_->AddCharacter('\n');
   writer_->AddCharacter('\"');
   for ( ; *s != '\0'; ++s) {
     switch (*s) {
       case '\b':
         writer_->AddString("\\b");
         continue;
       case '\f':
         writer_->AddString("\\f");
@@ skipping 65 matching lines @@
 
 
 void HeapSnapshotJSONSerializer::SortHashMap(
     HashMap* map, List<HashMap::Entry*>* sorted_entries) {
   for (HashMap::Entry* p = map->Start(); p != NULL; p = map->Next(p))
     sorted_entries->Add(p);
   sorted_entries->Sort(SortUsingEntryValue);
 }
 
 } }  // namespace v8::internal