Add the analysis options path to the diagnostics page.

pkg/analysis_server/lib/src/context_manager.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.
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:core';
 
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 996 matching lines @@
   }
 
   void _checkForAnalysisOptionsUpdate(
       String path, ContextInfo info, ChangeType changeType) {
     if (AnalysisEngine.isAnalysisOptionsFileName(path, pathContext)) {
       if (enableNewAnalysisDriver) {
         AnalysisDriver driver = info.analysisDriver;
         String contextRoot = info.folder.path;
         ContextBuilder builder =
             callbacks.createContextBuilder(info.folder, defaultContextOptions);
-        AnalysisOptions options = builder.getAnalysisOptions(contextRoot);
+        AnalysisOptions options = builder.getAnalysisOptions(contextRoot,
+            contextRoot: driver.contextRoot);
         SourceFactory factory =
             builder.createSourceFactory(contextRoot, options);
         driver.configure(analysisOptions: options, sourceFactory: factory);
         // TODO(brianwilkerson) Set exclusion patterns.
       } else {
         var analysisContext = info.context;
         if (analysisContext is context.AnalysisContextImpl) {
           Map<String, Object> options =
               readOptions(info.folder, info.disposition.packages);
           processOptionsForContext(info, options,
               optionsRemoved: changeType == ChangeType.REMOVE);
           analysisContext.sourceFactory = _createSourceFactory(
               analysisContext, analysisContext.analysisOptions, info.folder);
           callbacks.applyChangesToContext(info.folder, new ChangeSet());
         }
       }
     }
   }
 
   void _checkForPackagespecUpdate(
       String path, ContextInfo info, Folder folder) {
     // Check to see if this is the .packages file for this context and if so,
     // update the context's source factory.
     if (absolutePathContext.basename(path) == PACKAGE_SPEC_NAME) {
       String contextRoot = info.folder.path;
       ContextBuilder builder =
           callbacks.createContextBuilder(info.folder, defaultContextOptions);
-      AnalysisOptions options = builder.getAnalysisOptions(contextRoot);
+      AnalysisOptions options = builder.getAnalysisOptions(contextRoot,
+          contextRoot: info.analysisDriver.contextRoot);
       SourceFactory factory = builder.createSourceFactory(contextRoot, options);
       if (enableNewAnalysisDriver) {
         AnalysisDriver driver = info.analysisDriver;
         driver.configure(analysisOptions: options, sourceFactory: factory);
       } else {
         info.context.analysisOptions = options;
         info.context.sourceFactory = factory;
       }
     }
   }
@@ skipping 916 matching lines @@
     }
     return _embedderLocator;
   }
 
   @override
   SdkExtensionFinder getSdkExtensionFinder(ResourceProvider resourceProvider) {
     return _sdkExtensionFinder ??=
         new SdkExtensionFinder(buildPackageMap(resourceProvider));
   }
 }