- Add an extension test which throws from native code.

runtime/bin/test_extension.cc

Index: runtime/bin/test_extension.cc
===================================================================
--- runtime/bin/test_extension.cc	(revision 15726)
+++ runtime/bin/test_extension.cc	(working copy)
@@ -16,6 +16,7 @@
   return parent_library;
 }
 
+
 void IfNull(Dart_NativeArguments arguments) {
   Dart_Handle object = Dart_GetNativeArgument(arguments, 0);
   if (Dart_IsNull(object)) {
@@ -25,6 +26,13 @@
   }
 }
 
+
+void ThrowMeTheBall(Dart_NativeArguments arguments) {
+  Dart_Handle object = Dart_GetNativeArgument(arguments, 0);
+  Dart_ThrowException(object);
+}
+
+
 Dart_NativeFunction ResolveName(Dart_Handle name, int argc) {
   assert(Dart_IsString(name));
   const char* cname;
@@ -34,8 +42,11 @@
   if (Dart_IsError(check_error)) {
     Dart_PropagateError(check_error);
   }
-  if (!strcmp("TestExtension_IfNull", cname) && argc == 2) {
+  if ((strcmp("TestExtension_IfNull", cname) == 0) && (argc == 2)) {
     return IfNull;
   }
+  if ((strcmp("TestExtension_ThrowMeTheBall", cname) == 0) && (argc == 1)) {
+    return ThrowMeTheBall;
+  }
   return NULL;
 }