Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/http_parser/lib/src/media_type.dart

Index: mojo/public/dart/third_party/http_parser/lib/src/media_type.dart
diff --git a/mojo/public/dart/third_party/http_parser/lib/src/media_type.dart b/mojo/public/dart/third_party/http_parser/lib/src/media_type.dart
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index 0000000000000000000000000000000000000000..5bae0ec2ad6cd404afb0c1aeb1575ce44dc0181d
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+// Copyright (c) 2014, 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.
+
+library http_parser.media_type;
+
+import 'package:collection/collection.dart';
+import 'package:string_scanner/string_scanner.dart';
+
+import 'scan.dart';
+import 'utils.dart';
+
+/// A regular expression matching a character that needs to be backslash-escaped
+/// in a quoted string.
+final _escapedChar = new RegExp(r'["\x00-\x1F\x7F]');
+
+/// A class representing an HTTP media type, as used in Accept and Content-Type
+/// headers.
+///
+/// This is immutable; new instances can be created based on an old instance by
+/// calling [change].
+class MediaType {
+  /// The primary identifier of the MIME type.
+  final String type;
+
+  /// The secondary identifier of the MIME type.
+  final String subtype;
+
+  /// The parameters to the media type.
+  ///
+  /// This map is immutable.
+  final Map<String, String> parameters;
+
+  /// The media type's MIME type.
+  String get mimeType => "$type/$subtype";
+
+  /// Parses a media type.
+  ///
+  /// This will throw a FormatError if the media type is invalid.
+  factory MediaType.parse(String mediaType) {
+    // This parsing is based on sections 3.6 and 3.7 of the HTTP spec:
+    // http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html.
+    return wrapFormatException("media type", mediaType, () {
+      var scanner = new StringScanner(mediaType);
+      scanner.scan(whitespace);
+      scanner.expect(token);
+      var type = scanner.lastMatch[0];
+      scanner.expect('/');
+      scanner.expect(token);
+      var subtype = scanner.lastMatch[0];
+      scanner.scan(whitespace);
+
+      var parameters = {};
+      while (scanner.scan(';')) {
+        scanner.scan(whitespace);
+        scanner.expect(token);
+        var attribute = scanner.lastMatch[0];
+        scanner.expect('=');
+
+        var value;
+        if (scanner.scan(token)) {
+          value = scanner.lastMatch[0];
+        } else {
+          value = expectQuotedString(scanner);
+        }
+
+        scanner.scan(whitespace);
+        parameters[attribute] = value;
+      }
+
+      scanner.expectDone();
+      return new MediaType(type, subtype, parameters);
+    });
+  }
+
+  MediaType(this.type, this.subtype, [Map<String, String> parameters])
+      : this.parameters = new UnmodifiableMapView(
+          parameters == null ? {} : new Map.from(parameters));
+
+  /// Returns a copy of this [MediaType] with some fields altered.
+  ///
+  /// [type] and [subtype] alter the corresponding fields. [mimeType] is parsed
+  /// and alters both the [type] and [subtype] fields; it cannot be passed along
+  /// with [type] or [subtype].
+  ///
+  /// [parameters] overwrites and adds to the corresponding field. If
+  /// [clearParameters] is passed, it replaces the corresponding field entirely
+  /// instead.
+  MediaType change({String type, String subtype, String mimeType,
+      Map<String, String> parameters, bool clearParameters: false}) {
+    if (mimeType != null) {
+      if (type != null) {
+        throw new ArgumentError("You may not pass both [type] and [mimeType].");
+      } else if (subtype != null) {
+        throw new ArgumentError("You may not pass both [subtype] and "
+            "[mimeType].");
+      }
+
+      var segments = mimeType.split('/');
+      if (segments.length != 2) {
+        throw new FormatException('Invalid mime type "$mimeType".');
+      }
+
+      type = segments[0];
+      subtype = segments[1];
+    }
+
+    if (type == null) type = this.type;
+    if (subtype == null) subtype = this.subtype;
+    if (parameters == null) parameters = {};
+
+    if (!clearParameters) {
+      var newParameters = parameters;
+      parameters = new Map.from(this.parameters);
+      parameters.addAll(newParameters);
+    }
+
+    return new MediaType(type, subtype, parameters);
+  }
+
+  /// Converts the media type to a string.
+  ///
+  /// This will produce a valid HTTP media type.
+  String toString() {
+    var buffer = new StringBuffer()
+      ..write(type)
+      ..write("/")
+      ..write(subtype);
+
+    parameters.forEach((attribute, value) {
+      buffer.write("; $attribute=");
+      if (nonToken.hasMatch(value)) {
+        buffer
+          ..write('"')
+          ..write(
+              value.replaceAllMapped(_escapedChar, (match) => "\\" + match[0]))
+          ..write('"');
+      } else {
+        buffer.write(value);
+      }
+    });
+
+    return buffer.toString();
+  }
+}