Refactor resolution code in the vm to properly handle ambiguity errors.

runtime/vm/object_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 3205 matching lines @@
 static RawField* GetField(const Class& cls, const char* name) {
   const Field& field =
       Field::Handle(cls.LookupField(String::Handle(String::New(name))));
   ASSERT(!field.IsNull());
   return field.raw();
 }
 
 
 static RawClass* GetClass(const Library& lib, const char* name) {
   const Class& cls =
-      Class::Handle(lib.LookupClass(String::Handle(Symbols::New(name))));
+      Class::Handle(lib.LookupClass(String::Handle(Symbols::New(name)), NULL));
   ASSERT(!cls.IsNull());
   return cls.raw();
 }
 
 
 static void PrintMetadata(const char* name, const Object& data) {
   if (data.IsError()) {
     OS::Print("Error in metadata evaluation for %s: '%s'\n",
               name,
               Error::Cast(data).ToErrorCString());
@@ skipping 108 matching lines @@
       "        b - 2 : b;\n"
       "  }\n"
       "}";
   TestCase::LoadTestScript(kScriptChars, NULL);
   EXPECT(ClassFinalizer::FinalizePendingClasses());
   const String& name = String::Handle(String::New(TestCase::url()));
   const Library& lib = Library::Handle(Library::LookupLibrary(name));
   EXPECT(!lib.IsNull());
 
   const Class& class_a = Class::Handle(
-      lib.LookupClass(String::Handle(Symbols::New("A"))));
+      lib.LookupClass(String::Handle(Symbols::New("A")), NULL));
   const Function& test1 = Function::Handle(GetFunction(class_a, "test1"));
   const Function& test2 = Function::Handle(GetFunction(class_a, "test2"));
   const Function& test3 = Function::Handle(GetFunction(class_a, "test3"));
   const Function& test4 = Function::Handle(GetFunction(class_a, "test4"));
   const Function& test5 = Function::Handle(GetFunction(class_a, "test5"));
   const Function& test6 = Function::Handle(GetFunction(class_a, "test6"));
   const Function& test7 = Function::Handle(GetFunction(class_a, "test7"));
   EXPECT_EQ(test1.SourceFingerprint(), test2.SourceFingerprint());
   EXPECT_NE(test1.SourceFingerprint(), test3.SourceFingerprint());
   EXPECT_NE(test3.SourceFingerprint(), test4.SourceFingerprint());
   EXPECT_NE(test4.SourceFingerprint(), test5.SourceFingerprint());
   EXPECT_NE(test5.SourceFingerprint(), test6.SourceFingerprint());
   EXPECT_EQ(test6.SourceFingerprint(), test7.SourceFingerprint());
 }
 
 }  // namespace dart