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

tests/standalone/io/mime_multipart_parser_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:math');
+
 #source("../../../runtime/bin/http_parser.dart");
 #source("../../../runtime/bin/mime_multipart_parser.dart");
 
 void testParse(String message,
                String boundary,
                [List<Map> expectedHeaders,
                List expectedParts]) {
   _MimeMultipartParser parser;
   int partCount;
   Map headers;
@@ skipping 42 matching lines @@
     lastPartCalled = false;
   }
 
   void testWrite(List<int> data, [int chunkSize = -1]) {
     if (chunkSize == -1) chunkSize = data.length;
     reset();
     int written = 0;
     int unparsed;
     for (int pos = 0; pos < data.length; pos += chunkSize) {
       int remaining = data.length - pos;
-      int writeLength = Math.min(chunkSize, remaining);
+      int writeLength = min(chunkSize, remaining);
       written += writeLength;
       int parsed =
           parser.update(data.getRange(pos, writeLength), 0, writeLength);
       unparsed = writeLength - parsed;
       Expect.equals(0, unparsed);
     }
     Expect.isTrue(lastPartCalled);
   }
 
   // Test parsing the data three times delivering the data in
@@ skipping 251 matching lines @@
 \r
 Body2\r
 --xxx\r\n""";
   Expect.throws(() => testParse(message, "xxx", null, [null, null]));
 }
 
 void main() {
   testParseValid();
   testParseInvalid();
 }