Fixed package: imports breaking apidoc.

utils/apidoc/apidoc.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.
 
 /**
  * This generates the reference documentation for the core libraries that come
  * with dart. It is built on top of dartdoc, which is a general-purpose library
  * for generating docs from any Dart code. This library extends that to include
  * additional information and styling specific to our standard library.
  *
@@ skipping 16 matching lines @@
 
 void main() {
   final args = new Options().arguments;
 
   int mode = doc.MODE_STATIC;
   Path outputDir = new Path('docs');
   bool generateAppCache = false;
 
   List<String> excludedLibraries = <String>[];
   List<String> includedLibraries = <String>[];
+  var pkgPath;
 
 
   // Parse the command-line arguments.
   for (int i = 0; i < args.length; i++) {
     final arg = args[i];
 
     switch (arg) {
       case '--mode=static':
         mode = doc.MODE_STATIC;
         break;
 
       case '--mode=live-nav':
         mode = doc.MODE_LIVE_NAV;
         break;
 
       case '--generate-app-cache=true':
         generateAppCache = true;
         break;
 
       default:
         if (arg.startsWith('--exclude-lib=')) {
           excludedLibraries.add(arg.substring('--exclude-lib='.length));
         } else if (arg.startsWith('--include-lib=')) {
           includedLibraries.add(arg.substring('--include-lib='.length));
         } else if (arg.startsWith('--out=')) {
           outputDir = new Path.fromNative(arg.substring('--out='.length));
+        } else if (arg.startsWith('--pkg=')) {
+          pkgPath = arg.substring('--pkg='.length);
         } else {
           print('Unknown option: $arg');
           return;
         }
         break;
     }
   }
 
   final libPath = doc.scriptDir.append('../../sdk/');
-  final pkgPath = doc.scriptDir.append('../../pkg/');
 
   doc.cleanOutputDirectory(outputDir);
 
   // The basic dartdoc-provided static content.
   final copiedStatic = doc.copyDirectory(
       doc.scriptDir.append('../../sdk/lib/_internal/dartdoc/static'),
       outputDir);
 
   // The apidoc-specific static content.
   final copiedApiDocStatic = doc.copyDirectory(
@@ skipping 497 matching lines @@
    return '''
         <div class="mdn">
         $mdnComment
         <div class="mdn-note"><a href="$mdnUrl">from MDN</a></div>
         </div>
         ''';
   }
 
   String toString() => mdnComment;
 }