Fixes for URI and Object completions with the new driver.

pkg/analysis_server/lib/src/services/completion/dart/uri_contributor.dart

 // 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 services.completion.contributor.dart.importuri;
 
 import 'dart:async';
 import 'dart:core';
 
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
@@ skipping 59 matching lines @@
             if (end == data.length) {
               String ch = data[end - 1];
               if (ch != '"' && ch != "'") {
                 // Insertion point at end of file
                 // and missing closing quote on non-empty string
                 visitSimpleStringLiteral(uri);
               }
             }
           }
         }
-      }
-      else if (offset == start && offset == end) {
+      } else if (offset == start && offset == end) {
         String data = request.source.contents.data;
         if (end == data.length) {
           String ch = data[end - 1];
           if (ch == '"' || ch == "'") {
             // Insertion point at end of file
             // and missing closing quote on empty string
             visitSimpleStringLiteral(uri);
           }
         }
       }
@@ skipping 13 matching lines @@
     } else if (parent is PartDirective && parent.uri == node) {
       String partialUri = _extractPartialUri(node);
       if (partialUri != null) {
         _addFileSuggestions(partialUri);
       }
     }
   }
 
   void _addDartSuggestions() {
     _addSuggestion('dart:');
-    SourceFactory factory = request.context.sourceFactory;
+    SourceFactory factory = request.sourceFactory;
     for (SdkLibrary lib in factory.dartSdk.sdkLibraries) {
       if (!lib.isInternal && !lib.isImplementation) {
         if (!lib.shortName.startsWith('dart:_')) {
           _addSuggestion(lib.shortName,
               relevance: lib.shortName == 'dart:core'
                   ? DART_RELEVANCE_LOW
                   : DART_RELEVANCE_DEFAULT);
         }
       }
     }
@@ skipping 59 matching lines @@
         if (partial.startsWith(childPrefix)) {
           _addPackageFolderSuggestions(partial, childPrefix, child);
         }
       } else {
         _addSuggestion('$prefix${child.shortName}');
       }
     }
   }
 
   void _addPackageSuggestions(String partial) {
-    SourceFactory factory = request.context.sourceFactory;
+    SourceFactory factory = request.sourceFactory;
     Map<String, List<Folder>> packageMap = factory.packageMap;
     if (packageMap != null) {
       _addSuggestion('package:');
       packageMap.forEach((String pkgName, List<Folder> folders) {
         String prefix = 'package:$pkgName/';
         _addSuggestion(prefix);
         for (Folder folder in folders) {
           if (folder.exists) {
             _addPackageFolderSuggestions(partial, prefix, folder);
           }
         }
       });
     }
   }
 
   void _addSuggestion(String completion,
       {int relevance: DART_RELEVANCE_DEFAULT}) {
     suggestions.add(new CompletionSuggestion(CompletionSuggestionKind.IMPORT,
         relevance, completion, completion.length, 0, false, false));
   }
 
   String _extractPartialUri(SimpleStringLiteral node) {
     if (request.offset < node.contentsOffset) {
       return null;
     }
     return node.literal.lexeme.substring(
         node.contentsOffset - node.offset, request.offset - node.offset);
   }
 }