Simplify parsing of 'new' operator.

runtime/vm/parser.h

Index: runtime/vm/parser.h
===================================================================
--- runtime/vm/parser.h	(revision 3631)
+++ runtime/vm/parser.h	(working copy)
@@ -215,15 +215,16 @@
   void ParseLibraryImport();
   void ParseLibraryInclude();
 
-  void TryResolveTypeFromClass(intptr_t type_pos,
-                               const Class& cls,
-                               AbstractType* type);
   enum TypeResolution {
     kIgnore,  // Parsed type is ignored and replaced by Dynamic.
     kDoNotResolve,  // Type resolution is postponed.
     kCanResolve,  // Type resolution is optional.
     kMustResolve  // Type resolution is required.
   };
+  void ResolveTypeFromClass(intptr_t type_pos,
+                            const Class& cls,
+                            TypeResolution type_resolution,
+                            AbstractType* type);
   RawAbstractType* ParseType(TypeResolution type_resolution);
   void ParseTypeParameters(const Class& cls);
   RawAbstractTypeArguments* ParseTypeArguments(TypeResolution type_resolution);