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

tests/standalone/io/http_server_socket_test.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.
 
 #import("dart:io");
 #import("dart:isolate");
+#import("dart:math");
 
 class ExpectedDataOutputStream implements OutputStream {
   ExpectedDataOutputStream(List<int> this._data,
                            int this._cutoff,
                            bool this._closeAsError,
                            SocketMock this._socket);
 
   void set onNoPendingWrites(void callback()) {
     _onNoPendingWrites = callback;
   }
@@ skipping 38 matching lines @@
   int _cutoff;
   bool _closeAsError;
   SocketMock _socket;
 }
 
 class SocketMock implements Socket {
   SocketMock(List<int> this._data,
              List<int> expected,
              int cutoff,
              bool closeAsError) :
-      _hashCode = (Math.random() * (1 << 32)).toInt(),
+      _hashCode = new Random().nextInt(1<< 32),
       _read = [] {
     _outputStream =
         new ExpectedDataOutputStream(expected, cutoff, closeAsError, this);
   }
 
   int available() {
     return _data.length;
   }
 
   void _closeInternal([bool asError = false]) {
     Expect.isFalse(_closed);
     _closed = true;
     _onClosedInternal();
     if (asError) {
       _onError(new Exception("Socket closed unexpected"));
     } else {
       _onClosed();
     }
   }
 
   int readList(List<int> buffer, int offset, int count) {
-    int max = Math.min(count, _data.length);
+    int max = min(count, _data.length);
     buffer.setRange(offset, max, _data);
     _data = _data.getRange(max, _data.length - max);
     return max;
   }
 
   void close([bool halfClose = false]) {
     if (!halfClose && !_closed) _closeInternal();
   }
 
   void set onData(void callback()) {
@@ skipping 113 matching lines @@
       "GET / HTTP/1.1\r\nKeep-Alive: False\r\n\r\n",
       "HTTP/1.1 200 OK\r\ntransfer-encoding: chunked\r\nconnection: close"
       "\r\n\r\n0\r\n\r\n");
 
   server.close();
 }
 
 void main() {
   testSocketClose();
 }