Make ClassFinalizer indifferent on whether we are generating a snapshot or not.

runtime/vm/compiler_test.cc

Index: runtime/vm/compiler_test.cc
===================================================================
--- runtime/vm/compiler_test.cc	(revision 11113)
+++ runtime/vm/compiler_test.cc	(working copy)
@@ -44,7 +44,7 @@
                                               RawScript::kSourceTag));
   Library& lib = Library::Handle(Library::CoreLibrary());
   EXPECT(CompilerTest::TestCompileScript(lib, script));
-  EXPECT(ClassFinalizer::FinalizePendingClasses());
+  EXPECT(ClassFinalizer::FinalizeAllClasses());
   Class& cls = Class::Handle(
       lib.LookupClass(String::Handle(Symbols::New("A"))));
   EXPECT(!cls.IsNull());