Make RegExp constructor non-const.

tests/co19/co19-compiler.status

 # 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.
 
 [ $compiler == dartc ]
 Language/03_Overview/1_Scoping_A02_t05: Fail # TODO(analyzer-team): Please triage this failure.
 Language/03_Overview/1_Scoping_A02_t06: Fail # TODO(analyzer-team): Please triage this failure.
 Language/03_Overview/2_Privacy_A01_t04: Fail # TODO(analyzer-team): Please triage this failure.
 Language/03_Overview/2_Privacy_A01_t05: Fail # TODO(analyzer-team): Please triage this failure.
 Language/03_Overview/2_Privacy_A01_t09: Fail # TODO(analyzer-team): Please triage this failure.
@@ skipping 345 matching lines @@
 LibTest/core/List/setRange_A05_t01: Fail, OK            
 LibTest/core/TypeError/dstName_A01_t01: Fail, OK                
 LibTest/core/TypeError/column_A01_t01: Fail, OK         
 LibTest/core/TypeError/failedAssertion_A01_t01: Fail, OK                
 LibTest/core/TypeError/dstType_A01_t01: Fail, OK                
 LibTest/core/TypeError/line_A01_t01: Fail, OK           
 LibTest/core/TypeError/srcType_A01_t01: Fail, OK                
 LibTest/core/TypeError/toString_A01_t01: Fail, OK               
 LibTest/core/TypeError/url_A01_t01: Fail, OK
 
-# co19 issue 307
-Language/07_Classes/6_Constructors/2_Factories_A03_t01: Fail, OK
+Language/07_Classes/6_Constructors/2_Factories_A03_t01: Fail, OK # co19 issue 307
 
+LibTest/core/RegExp/RegExp_A01_t04: Fail, OK # co19 issue 314
+LibTest/core/String/contains_A01_t01: Fail, OK # co19 issue 314
+LibTest/core/String/contains_A01_t03: Fail, OK # co19 issue 314
 
 Language/10_Expressions/30_Type_Cast_A01_t04: Fail, OK # the expected error is not specified
 Language/13_Libraries_and_Scripts/13_Libraries_and_Scripts_A05_t03: Fail, OK # contains syntax error
 Language/13_Libraries_and_Scripts/13_Libraries_and_Scripts_A05_t04: Fail, OK # contains syntax error
 Language/06_Functions/2_Formal_Parameters/2_Optional_Formals_A03_t02: Fail, OK # deprecated parameter syntax
 Language/11_Expressions/15_Method_Invocation/4_Super_Invocation_A04_t04: Fail # Issue 5294
 
 # The following tests use NoSuchMethodException instead of NoSuchMethodError.
 Language/06_Functions/4_External_Functions_A01_t01: Fail, OK # co19 issue 195
 Language/11_Expressions/15_Method_Invocation/3_Static_Invocation_A04_t07: Fail, OK # co19 issue 195
@@ skipping 91 matching lines @@
 Language/07_Classes/6_Constructors/3_Constant_Constructors_A05_t03: Fail, OK
 Language/07_Classes/6_Constructors/3_Constant_Constructors_A05_t01: Fail, OK
 Language/03_Overview/2_Privacy_A01_t11: Fail, OK
 Language/03_Overview/1_Scoping_A02_t28: Fail, OK
 Language/03_Overview/2_Privacy_A01_t18: Fail, OK
 Language/03_Overview/2_Privacy_A01_t08: Fail, OK
 
 
 [ $runtime == drt && ($compiler == none || $compiler == frog) ]
 *: Skip