Change fromString constructor to parse static method

tests/standalone/io/http_headers_test.dart

 // Copyright (c) 2013, 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 "package:expect/expect.dart";
 import 'dart:async';
 import 'dart:math';
 
 part "../../../sdk/lib/io/io_sink.dart";
 part "../../../sdk/lib/io/http.dart";
@@ skipping 185 matching lines @@
       Expect.equals(parameters.length, headerValue.parameters.length);
       parameters.forEach((String name, String value) {
         Expect.equals(value, headerValue.parameters[name]);
       });
     } else {
       Expect.equals(0, headerValue.parameters.length);
     }
   }
 
   HeaderValue headerValue;
-  headerValue = new HeaderValue.fromString(
+  headerValue = HeaderValue.parse(
       "xxx; aaa=bbb; ccc=\"\\\";\\a\"; ddd=\"    \"");
   check(headerValue, "xxx", {"aaa": "bbb", "ccc": '\";a', "ddd": "    "});
   headerValue = new HeaderValue("xxx",
                                 {"aaa": "bbb", "ccc": '\";a', "ddd": "    "});
   check(headerValue, "xxx", {"aaa": "bbb", "ccc": '\";a', "ddd": "    "});
 
-  headerValue = new HeaderValue.fromString(
+  headerValue = HeaderValue.parse(
     "attachment; filename=genome.jpeg;"
     "modification-date=\"Wed, 12 February 1997 16:29:51 -0500\"");
   var parameters = {
       "filename": "genome.jpeg",
       "modification-date": "Wed, 12 February 1997 16:29:51 -0500"
   };
   check(headerValue, "attachment", parameters);
   headerValue = new HeaderValue("attachment", parameters);
   check(headerValue, "attachment", parameters);
-  headerValue = new HeaderValue.fromString(
+  headerValue = HeaderValue.parse(
     "  attachment  ;filename=genome.jpeg  ;"
     "modification-date = \"Wed, 12 February 1997 16:29:51 -0500\""  );
   check(headerValue, "attachment", parameters);
 }
 
 void testContentType() {
   void check(ContentType contentType,
              String primaryType,
              String subType,
              [Map parameters]) {
     Expect.equals(primaryType, contentType.primaryType);
     Expect.equals(subType, contentType.subType);
     Expect.equals("$primaryType/$subType", contentType.value);
     if (parameters != null) {
       Expect.equals(parameters.length, contentType.parameters.length);
       parameters.forEach((String name, String value) {
         Expect.equals(value, contentType.parameters[name]);
       });
     } else {
       Expect.equals(0, contentType.parameters.length);
     }
   }
 
   ContentType contentType;
   contentType = new ContentType("", "");
   Expect.equals("", contentType.primaryType);
   Expect.equals("", contentType.subType);
   Expect.equals("/", contentType.value);
 
-  contentType = new ContentType.fromString("text/html");
+  contentType = ContentType.parse("text/html");
   check(contentType, "text", "html");
   Expect.equals("text/html", contentType.toString());
   contentType = new ContentType("text", "html", charset: "utf-8");
   check(contentType, "text", "html", {"charset": "utf-8"});
   Expect.equals("text/html; charset=utf-8", contentType.toString());
 
   contentType = new ContentType("text",
                                 "html",
                                 parameters: {"CHARSET": "UTF-8", "xxx": "yyy"});
   check(contentType, "text", "html", {"charset": "utf-8", "xxx": "yyy"});
   String s = contentType.toString();
   bool expectedToString = (s == "text/html; charset=utf-8; xxx=yyy" ||
                            s == "text/html; xxx=yyy; charset=utf-8");
   Expect.isTrue(expectedToString);
 
   contentType = new ContentType("text",
                                 "html",
                                 charset: "ISO-8859-1",
                                 parameters: {"CHARSET": "UTF-8", "xxx": "yyy"});
   check(contentType, "text", "html", {"charset": "iso-8859-1", "xxx": "yyy"});
   s = contentType.toString();
   expectedToString = (s == "text/html; charset=iso-8859-1; xxx=yyy" ||
                       s == "text/html; xxx=yyy; charset=iso-8859-1");
   Expect.isTrue(expectedToString);
 
-  contentType = new ContentType.fromString("text/html");
+  contentType = ContentType.parse("text/html");
   check(contentType, "text", "html");
-  contentType = new ContentType.fromString(" text/html  ");
+  contentType = ContentType.parse(" text/html  ");
   check(contentType, "text", "html");
-  contentType = new ContentType.fromString("text/html; charset=utf-8");
+  contentType = ContentType.parse("text/html; charset=utf-8");
   check(contentType, "text", "html", {"charset": "utf-8"});
-  contentType = new ContentType.fromString(
+  contentType = ContentType.parse(
       "  text/html  ;  charset  =  utf-8  ");
   check(contentType, "text", "html", {"charset": "utf-8"});
-  contentType = new ContentType.fromString(
+  contentType = ContentType.parse(
       "text/html; charset=utf-8; xxx=yyy");
   check(contentType, "text", "html", {"charset": "utf-8", "xxx": "yyy"});
-  contentType = new ContentType.fromString(
+  contentType = ContentType.parse(
       "  text/html  ;  charset  =  utf-8  ;  xxx=yyy  ");
   check(contentType, "text", "html", {"charset": "utf-8", "xxx": "yyy"});
-  contentType = new ContentType.fromString(
+  contentType = ContentType.parse(
       'text/html; charset=utf-8; xxx="yyy"');
   check(contentType, "text", "html", {"charset": "utf-8", "xxx": "yyy"});
-  contentType = new ContentType.fromString(
+  contentType = ContentType.parse(
       "  text/html  ;  charset  =  utf-8  ;  xxx=yyy  ");
   check(contentType, "text", "html", {"charset": "utf-8", "xxx": "yyy"});
 }
 
 void testContentTypeCache() {
   _HttpHeaders headers = new _HttpHeaders("1.1");
   headers.set(HttpHeaders.CONTENT_TYPE, "text/html");
   Expect.equals("text", headers.contentType.primaryType);
   Expect.equals("html", headers.contentType.subType);
   Expect.equals("text/html", headers.contentType.value);
@@ skipping 107 matching lines @@
   testIfModifiedSince();
   testHost();
   testEnumeration();
   testHeaderValue();
   testContentType();
   testContentTypeCache();
   testCookie();
   testInvalidCookie();
   testHeaderLists();
 }