Deprecate Math object in corelib in favor of dart:math library.

lib/uri/encode_decode.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.
 
 /**
  * Javascript-like URI encode/decode functions.
  * The documentation here borrows heavily from the original Javascript
  * doumentation on MDN at:
  * https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects
  */
@@ skipping 92 matching lines @@
 
 /**
  * Convert a byte (2 character hex sequence) in string [s] starting
  * at position [pos] to its ordinal value
  */
 
 int _hexCharPairToByte(String s, int pos) {
   // An alternative to calling parseInt twice would be to take a
   // two character substring and call it once, but that may be less
   // efficient.
-  int d1 = Math.parseInt("0x${s[pos]}");
-  int d2 = Math.parseInt("0x${s[pos+1]}");
+  int d1 = parseInt("0x${s[pos]}");
+  int d2 = parseInt("0x${s[pos+1]}");
   return d1 * 16 + d2;
 }
 
 /**
  * A JavaScript-like decodeURI function. It unescapes the string [text] and
  * returns the unescaped string.
  */
 String _uriDecode(String text) {
   StringBuffer result = new StringBuffer();
   List<int> codepoints = new List<int>();
@@ skipping 13 matching lines @@
         if (i == text.length)
           break;
         ch = text[i];
       }
       result.add(decodeUtf8(codepoints));
     }
   }
   return result.toString();
 }