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

lib/json/json.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
 #library("dart:json");
 
+#import('dart:math');
+
 // Pure Dart implementation of JSON protocol.
 
 /**
  * Utility class to parse JSON and serialize objects to JSON.
  */
 class JSON {
   /**
    * Parses [json] and build the corresponding object.
    */
   static parse(String json) {
@@ skipping 265 matching lines @@
             break;
           case CHAR_T:
             c = TAB;
             break;
           case CHAR_U:
             if (position + 5 > length) {
               _error('Invalid unicode esacape sequence');
             }
             final codeString = json.substring(position + 1, position + 5);
             try {
-              c = Math.parseInt('0x${codeString}');
+              c = parseInt('0x${codeString}');
             } catch (var e) {
               _error('Invalid unicode esacape sequence');
             }
             position += 4;
             break;
           default:
             _error('Invalid esacape sequence in string literal');
         }
       }
       charCodes.add(c);
@@ skipping 37 matching lines @@
         char = _nextChar();
         isInt = false;
         while (_isDigit(char)) char = _nextChar();
       } else {
         _error('Expected digit following \'e\' or \'E\'');
       }
     }
 
     String number = json.substring(startPos, position);
     if (isInt) {
-      return Math.parseInt(number);
+      return parseInt(number);
     } else {
-      return Math.parseDouble(number);
+      return parseDouble(number);
     }
   }
 
   bool _isChar(int char) {
     if (position >= length) return false;
     return json.charCodeAt(position) == char;
   }
 
   bool _isDigit(int char) {
     return char >= CHAR_0 && char <= CHAR_9;
@@ skipping 183 matching lines @@
         first = false;
       });
       _sb.add('}');
       _seen.removeLast();
       return;
     } else {
       throw const JsonUnsupportedObjectType();
     }
   }
 }