VM: Re-format to use at most one newline between functions

runtime/vm/native_entry.h

Index: runtime/vm/native_entry.h
diff --git a/runtime/vm/native_entry.h b/runtime/vm/native_entry.h
index 7a5be6e58012b4491aba7bd634b145da8bb2452a..9714c91b80502dc1be7cf506a969a501d400b1d3 100644
--- a/runtime/vm/native_entry.h
+++ b/runtime/vm/native_entry.h
@@ -86,7 +86,6 @@ typedef void (*NativeFunction)(NativeArguments* arguments);
   static RawObject* DN_Helper##name(Isolate* isolate, Thread* thread,          \
                                     Zone* zone, NativeArguments* arguments)
 
-
 // Helper that throws an argument exception.
 void DartNativeThrowArgumentException(const Instance& instance);
 
@@ -100,7 +99,6 @@ void DartNativeThrowArgumentException(const Instance& instance);
   }                                                                            \
   const type& name = type::Cast(__##name##_instance__);
 
-
 // Natives should throw an exception if an illegal argument is passed.
 // type name = value.
 #define GET_NATIVE_ARGUMENT(type, name, value)                                 \
@@ -114,7 +112,6 @@ void DartNativeThrowArgumentException(const Instance& instance);
   }                                                                            \
   name ^= value;
 
-
 // Helper class for resolving and handling native functions.
 class NativeEntry : public AllStatic {
  public: