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

runtime/bin/http_impl.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.
 
 class _HttpHeaders implements HttpHeaders {
   _HttpHeaders() : _headers = new Map<String, List<String>>();
 
   List<String> operator[](String name) {
     name = name.toLowerCase();
     return _headers[name];
@@ skipping 175 matching lines @@
       } else {
         if (pos > 0) {
           _host = value.substring(0, pos);
         } else {
           _host = null;
         }
         if (pos + 1 == value.length) {
           _port = HttpClient.DEFAULT_HTTP_PORT;
         } else {
           try {
-            _port = Math.parseInt(value.substring(pos + 1));
+            _port = parseInt(value.substring(pos + 1));
           } catch (FormatException e) {
             _port = null;
           }
         }
         _set("host", value);
       }
     } else if (name.toLowerCase() == "content-type") {
       _set("content-type", value);
     } else {
       name = name.toLowerCase();
@@ skipping 322 matching lines @@
       while (!done()) {
         String name = parseAttributeName();
         String value = "";
         if (!done() && s[index] == "=") {
           index++;  // Skip the = character.
           value = parseAttributeValue();
         }
         if (name == "expires") {
           expires = _HttpUtils.parseDate(value, strict: false);
         } else if (name == "max-age") {
-          maxAge = Math.parseInt(value);
+          maxAge = parseInt(value);
         } else if (name == "domain") {
           domain = value;
         } else if (name == "path") {
           path = value;
         } else if (name == "httponly") {
           httpOnly = true;
         } else if (name == "secure") {
           secure = true;
         }
         if (!done()) index++;  // Skip the ; character
@@ skipping 1131 matching lines @@
   }
 
   void _onResponseStart(int statusCode, String reasonPhrase, String version) {
     _statusCode = statusCode;
     _reasonPhrase = reasonPhrase;
   }
 
   void _onHeaderReceived(String name, String value) {
     _headers.add(name, value);
     if (name == "content-length") {
-      _contentLength = Math.parseInt(value);
+      _contentLength = parseInt(value);
     }
   }
 
   void _onHeadersComplete() {
     _headers._mutable = false;
     _buffer = new _BufferList();
     if (isRedirect && _connection.followRedirects) {
       if (_connection._redirects == null ||
           _connection._redirects.length < _connection.maxRedirects) {
         // Check the location header.
@@ skipping 464 matching lines @@
 
 
 class _RedirectInfo implements RedirectInfo {
   const _RedirectInfo(int this.statusCode,
                       String this.method,
                       Uri this.location);
   final int statusCode;
   final String method;
   final Uri location;
 }