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

tests/standalone/io/process_stderr_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.
 //
 // Process test program to test process communication.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
-#import("dart:io");
-#source("process_test_util.dart");
+#import('dart:io');
+#import('dart:math');
+
+#source('process_test_util.dart');
 
 void test(Process process, int expectedExitCode) {
   // Wait for the process to start and then interact with it.
   process.onStart = () {
     List<int> data = "ABCDEFGHI\n".charCodes();
     final int dataSize = data.length;
 
     InputStream input = process.stderr;
     OutputStream output = process.stdin;
 
     int received = 0;
     List<int> buffer = [];
 
     void readData() {
       buffer.addAll(input.read());
       for (int i = received;
-           i < Math.min(data.length, buffer.length) - 1;
+           i < min(data.length, buffer.length) - 1;
            i++) {
         Expect.equals(data[i], buffer[i]);
       }
       received = buffer.length;
       if (received >= dataSize) {
         // We expect an extra character on windows due to carriage return.
         if (13 === buffer[dataSize - 1] && dataSize + 1 === received) {
           Expect.equals(13, buffer[dataSize - 1]);
           Expect.equals(10, buffer[dataSize]);
           buffer.removeLast();
@@ skipping 21 matching lines @@
 
   // Run the test using the dart binary with an echo script.
   // The test runner can be run from either the root or from runtime.
   var scriptFile = new File("tests/standalone/io/process_std_io_script.dart");
   if (!scriptFile.existsSync()) {
     scriptFile = new File("../tests/standalone/io/process_std_io_script.dart");
   }
   Expect.isTrue(scriptFile.existsSync());
   test(Process.start(new Options().executable, [scriptFile.name, "1"]), 0);
 }