Keep two empty lines between declarations for cpp files

src/extensions/i18n/break-iterator.cc

Index: src/extensions/i18n/break-iterator.cc
===================================================================
--- src/extensions/i18n/break-iterator.cc	(revision 15486)
+++ src/extensions/i18n/break-iterator.cc	(working copy)
@@ -82,6 +82,7 @@
   object->Dispose(isolate);
 }
 
+
 // Throws a JavaScript exception.
 static v8::Handle<v8::Value> ThrowUnexpectedObjectError() {
   // Returns undefined, and schedules an exception to be thrown.
@@ -90,6 +91,7 @@
                       "that is not a BreakIterator.")));
 }
 
+
 // Deletes the old value and sets the adopted text in corresponding
 // JavaScript object.
 icu::UnicodeString* ResetAdoptedText(