Fix to suppress (redundant) parse error reporting.

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 452 matching lines @@
   }
 
   /**
    * Process [options] for the given context [info].
    */
   void processOptionsForContext(ContextInfo info, Folder folder,
       {bool optionsRemoved: false}) {
     Map<String, YamlNode> options;
     try {
       options = analysisOptionsProvider.getOptions(folder);
-    } catch (e, stacktrace) {
-      AnalysisEngine.instance.logger.logError(
-          'Error processing .analysis_options',
-          new CaughtException(e, stacktrace));
-      // TODO(pquitslund): contribute plugin that sends error notification on
-      // options file.
-      // Related test:
-      //   context_manager_test.test_analysis_options_parse_failure()
-      // AnalysisEngine.instance.optionsPlugin.optionsProcessors
-      //      .forEach((OptionsProcessor p) => p.onError(e));
+    } catch (_) {
+      // Parse errors are reported by GenerateOptionsErrorsTask.
     }
 
     if (options == null && !optionsRemoved) {
       return;
     }
 
     // Notify options processors.
     AnalysisEngine.instance.optionsPlugin.optionsProcessors
         .forEach((OptionsProcessor p) {
       try {
@@ skipping 338 matching lines @@
         if (pathContext.basename(packagespecFile.path) == PACKAGE_SPEC_NAME) {
           Packages packages = _readPackagespec(packagespecFile);
           return new PackagesFileDisposition(packages);
         }
         if (packageResolverProvider != null) {
           UriResolver resolver = packageResolverProvider(folder);
           if (resolver != null) {
             return new CustomPackageResolverDisposition(resolver);
           }
         }
-        
+
         ServerPerformanceStatistics.pub.makeCurrentWhile(() {
           packageMapInfo = _packageMapProvider.computePackageMap(folder);
         });
       } finally {
         callbacks.endComputePackageMap();
       }
       for (String dependencyPath in packageMapInfo.dependencies) {
         addDependency(dependencyPath);
       }
       if (packageMapInfo.packageMap == null) {
@@ skipping 603 matching lines @@
           var path = resourceProvider.pathContext.fromUri(uri);
           packageMap[name] = <Folder>[resourceProvider.getFolder(path)];
         }
       });
       return <UriResolver>[new SdkExtUriResolver(packageMap)];
     } else {
       return const <UriResolver>[];
     }
   }
 }