Rename IsConstructor to IsGenerativeConstructor.

runtime/vm/native_arguments.h

Index: runtime/vm/native_arguments.h
diff --git a/runtime/vm/native_arguments.h b/runtime/vm/native_arguments.h
index 938ad803796f76e66ac9f0e34618c41a4723cc6f..26fcb5cd21f2da80699fd84a611b26b7b60d4277 100644
--- a/runtime/vm/native_arguments.h
+++ b/runtime/vm/native_arguments.h
@@ -143,7 +143,7 @@ class NativeArguments {
 
   static intptr_t ParameterCountForResolution(const Function& function) {
     ASSERT(function.is_native());
-    ASSERT(!function.IsConstructor());  // Not supported.
+    ASSERT(!function.IsGenerativeConstructor());  // Not supported.
     intptr_t count = function.NumParameters();
     if (function.is_static() && function.IsClosureFunction()) {
       // The closure object is hidden and not accessible from native code.
@@ -157,7 +157,7 @@ class NativeArguments {
 
   static int ComputeArgcTag(const Function& function) {
     ASSERT(function.is_native());
-    ASSERT(!function.IsConstructor());  // Not supported.
+    ASSERT(!function.IsGenerativeConstructor());  // Not supported.
     int tag = ArgcBits::encode(function.NumParameters());
     int function_bits = 0;
     if (!function.is_static()) {