Revert "Change signature of noSuchMethod to take an InvocationMirror."

pkg/unittest/mock.dart

Index: pkg/unittest/mock.dart
diff --git a/pkg/unittest/mock.dart b/pkg/unittest/mock.dart
index 377e70209a6b96cc8d6408f55c0e0bac081de398..f743d330473f095584375509b7cd92109c25ff11 100644
--- a/pkg/unittest/mock.dart
+++ b/pkg/unittest/mock.dart
@@ -1276,17 +1276,10 @@ class Mock {
    * return value. If we find no [Behavior] to apply an exception is
    * thrown.
    */
-  noSuchMethod(InvocationMirror invocation) {
-    String method = invocation.methodName;
-    // Remove this when InvocationMirror works correctly.
-    if (method.startsWith("get:")) method = method.substring(4);
-
-    if (invocation.isGetter) {
-      method = 'get $method';
+  noSuchMethod(String method, List args) {
+    if (method.startsWith('get:')) {
+      method = 'get ${method.substring(4)}';
     }
-    List args = invocation.positionalArguments;
-    // TODO: Handle named arguments too.
-
     bool matchedMethodName = false;
     MatchState matchState = new MatchState();
     for (String k in _behaviors.keys) {