Add context to OptionsProcessor callback API.

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.
 
 library context.directory.manager;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:core' hide Resource;
@@ skipping 449 matching lines @@
     }
     // no
     return false;
   }
 
   /**
    * Process [options] for the context having info [info].
    */
   void processOptionsForContext(
       ContextInfo info, Map<String, YamlNode> options) {
-    //TODO(pquitslund): push handling into an options processor plugin contributed to engine.
-    //AnalysisEngine.instance.optionsPlugin.optionsProcessors
-    //    .forEach((OptionsProcessor p) => p.optionsProcessed(options));
     if (options == null) {
       return;
     }
+
+    // Notify options processors.
+    AnalysisEngine.instance.optionsPlugin.optionsProcessors
+        .forEach(
+        (OptionsProcessor p) => p.optionsProcessed(options, info.context));
+
+    // Analysis options are processed 'in-line'.
+    // TODO(pq): consider pushing exclude handling into a plugin.
     YamlMap analyzer = options['analyzer'];
     if (analyzer == null) {
       // No options for analyzer.
       return;
     }
 
     // Set ignore patterns.
     YamlList exclude = analyzer['exclude'];
     if (exclude != null) {
       setIgnorePatternsForContext(info, exclude);
@@ skipping 935 matching lines @@
           var path = resourceProvider.pathContext.fromUri(uri);
           packageMap[name] = <Folder>[resourceProvider.getFolder(path)];
         }
       });
       return <UriResolver>[new SdkExtUriResolver(packageMap)];
     } else {
       return const <UriResolver>[];
     }
   }
 }