Remove U+180E from whitespace in js_runtime and tests

sdk/lib/_internal/js_runtime/lib/js_string.dart

 // 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.
 
 part of _interceptors;
 
 /**
  * The interceptor class for [String]. The compiler recognizes this
  * class as an interceptor, and changes references to [:this:] to
  * actually use the receiver of the method, which is generated as an extra
@@ skipping 152 matching lines @@
         'returns:String;effects:none;depends:none;throws:null(1)',
         r'#.toLowerCase()', this);
   }
 
   String toUpperCase() {
     return JS(
         'returns:String;effects:none;depends:none;throws:null(1)',
         r'#.toUpperCase()', this);
   }
 
-  // Characters with Whitespace property (Unicode 6.2).
+  // Characters with Whitespace property (Unicode 6.3).
   // 0009..000D    ; White_Space # Cc       <control-0009>..<control-000D>
   // 0020          ; White_Space # Zs       SPACE
   // 0085          ; White_Space # Cc       <control-0085>
   // 00A0          ; White_Space # Zs       NO-BREAK SPACE
   // 1680          ; White_Space # Zs       OGHAM SPACE MARK
-  // 180E          ; White_Space # Zs       MONGOLIAN VOWEL SEPARATOR
   // 2000..200A    ; White_Space # Zs       EN QUAD..HAIR SPACE
   // 2028          ; White_Space # Zl       LINE SEPARATOR
   // 2029          ; White_Space # Zp       PARAGRAPH SEPARATOR
   // 202F          ; White_Space # Zs       NARROW NO-BREAK SPACE
   // 205F          ; White_Space # Zs       MEDIUM MATHEMATICAL SPACE
   // 3000          ; White_Space # Zs       IDEOGRAPHIC SPACE
   //
   // BOM: 0xFEFF
   static bool _isWhitespace(int codeUnit) {
     // Most codeUnits should be less than 256. Special case with a smaller
     // switch.
     if (codeUnit < 256) {
       switch (codeUnit) {
         case 0x09:
         case 0x0A:
         case 0x0B:
         case 0x0C:
         case 0x0D:
         case 0x20:
         case 0x85:
         case 0xA0:
           return true;
         default:
           return false;
       }
     }
     switch (codeUnit) {
       case 0x1680:
-      case 0x180E:
       case 0x2000:
       case 0x2001:
       case 0x2002:
       case 0x2003:
       case 0x2004:
       case 0x2005:
       case 0x2006:
       case 0x2007:
       case 0x2008:
       case 0x2009:
@@ skipping 248 matching lines @@
   Type get runtimeType => String;
 
   int get length => JS('int', r'#.length', this);
 
   String operator [](int index) {
     if (index is !int) throw diagnoseIndexError(this, index);
     if (index >= length || index < 0) throw diagnoseIndexError(this, index);
     return JS('String', '#[#]', this, index);
   }
 }