Move JSSyntaxRegExp to core as a private member. This removes the last refrences to dart:coreimpl.

runtime/vm/parser.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 "vm/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 1347 matching lines @@
     ASSERT(!super_func.IsNull());
     *is_no_such_method = true;
   } else {
     *is_no_such_method = false;
   }
   CheckFunctionIsCallable(token_pos, super_func);
   return super_func.raw();
 }
 
 
-// Lookup class in the corelib implementation which contains various VM
-// helper methods and classes.
-static RawClass* LookupImplClass(const String& class_name) {
-  Library& coreimpl = Library::Handle(Library::CoreImplLibrary());
-  return coreimpl.LookupClassAllowPrivate(class_name);
-}
-
-
 // Lookup class in the core lib which also contains various VM
 // helper methods and classes. Allow look up of private classes.
 static RawClass* LookupCoreClass(const String& class_name) {
   const Library& core_lib = Library::Handle(Library::CoreLibrary());
   String& name = String::Handle(class_name.raw());
   if (class_name.CharAt(0) == Scanner::kPrivateIdentifierStart) {
     // Private identifiers are mangled on a per script basis.
     name = String::Concat(name, String::Handle(core_lib.private_key()));
     name = Symbols::New(name);
   }
@@ skipping 7578 matching lines @@
       }
       key_value_array.SetAt(i, arg->AsLiteralNode()->literal());
     }
     key_value_array ^= key_value_array.Canonicalize();
     key_value_array.MakeImmutable();
 
     // Construct the map object.
     const String& immutable_map_class_name =
         String::Handle(Symbols::ImmutableMap());
     const Class& immutable_map_class =
-        Class::Handle(LookupImplClass(immutable_map_class_name));
+        Class::Handle(LookupCoreClass(immutable_map_class_name));
     ASSERT(!immutable_map_class.IsNull());
     ArgumentListNode* constr_args = new ArgumentListNode(TokenPos());
     constr_args->Add(new LiteralNode(literal_pos, key_value_array));
     const String& constr_name =
         String::Handle(Symbols::ImmutableMapConstructor());
     const Function& map_constr = Function::ZoneHandle(
         immutable_map_class.LookupConstructor(constr_name));
     ASSERT(!map_constr.IsNull());
     const Object& constructor_result = Object::Handle(
         EvaluateConstConstructorCall(immutable_map_class,
@@ skipping 989 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart