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

runtime/vm/dart_api_impl.h

Index: runtime/vm/dart_api_impl.h
diff --git a/runtime/vm/dart_api_impl.h b/runtime/vm/dart_api_impl.h
index 013725c51daf68b17fd7e3492b519d5bc151d78d..c1d3a5d25abd0dfb8cbf34c7dc852b85ca52cb47 100644
--- a/runtime/vm/dart_api_impl.h
+++ b/runtime/vm/dart_api_impl.h
@@ -67,7 +67,6 @@ const char* CanonicalFunction(const char* func);
   TransitionNativeToVM transition(T);                                          \
   HANDLESCOPE(T);
 
-
 #define RETURN_TYPE_ERROR(zone, dart_handle, type)                             \
   do {                                                                         \
     const Object& tmp =                                                        \
@@ -82,7 +81,6 @@ const char* CanonicalFunction(const char* func);
                          CURRENT_FUNC, #dart_handle, #type);                   \
   } while (0)
 
-
 #define RETURN_NULL_ERROR(parameter)                                           \
   return Api::NewError("%s expects argument '%s' to be non-null.",             \
                        CURRENT_FUNC, #parameter)
@@ -103,7 +101,6 @@ const char* CanonicalFunction(const char* func);
     }                                                                          \
   } while (0)
 
-
 class Api : AllStatic {
  public:
   // Create on the stack to provide a new throw-safe api scope.