Add a new 'summary' performance tag.

pkg/analyzer/lib/src/context/context.dart

 // Copyright (c) 2015, 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 analyzer.src.context.context;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 470 matching lines @@
   @override
   TypeSystem get typeSystem {
     if (_typeSystem == null) {
       _typeSystem = TypeSystem.create(this);
     }
     return _typeSystem;
   }
 
   @override
   bool aboutToComputeResult(CacheEntry entry, ResultDescriptor result) {
-    AnalysisTarget target = entry.target;
-    // TYPE_PROVIDER
-    if (target is AnalysisContextTarget && result == TYPE_PROVIDER) {
-      DartSdk dartSdk = sourceFactory.dartSdk;
-      if (dartSdk != null) {
-        AnalysisContext sdkContext = dartSdk.context;
-        if (!identical(sdkContext, this) &&
-            sdkContext is InternalAnalysisContext) {
-          return sdkContext.aboutToComputeResult(entry, result);
+    return PerformanceStatistics.summary.makeCurrentWhile(() {
+      AnalysisTarget target = entry.target;
+      // TYPE_PROVIDER
+      if (target is AnalysisContextTarget && result == TYPE_PROVIDER) {
+        DartSdk dartSdk = sourceFactory.dartSdk;
+        if (dartSdk != null) {
+          AnalysisContext sdkContext = dartSdk.context;
+          if (!identical(sdkContext, this) &&
+              sdkContext is InternalAnalysisContext) {
+            return sdkContext.aboutToComputeResult(entry, result);
+          }
         }
       }
-    }
-    // A result for a Source.
-    Source source = target.source;
-    if (source != null) {
-      InternalAnalysisContext context = _cache.getContextFor(source);
-      if (!identical(context, this)) {
-        return context.aboutToComputeResult(entry, result);
+      // A result for a Source.
+      Source source = target.source;
+      if (source != null) {
+        InternalAnalysisContext context = _cache.getContextFor(source);
+        if (!identical(context, this)) {
+          return context.aboutToComputeResult(entry, result);
+        }
       }
-    }
-    return false;
+      return false;
+    });
   }
 
   @override
   void addListener(AnalysisListener listener) {
     if (!_listeners.contains(listener)) {
       _listeners.add(listener);
     }
   }
 
   @override
@@ skipping 532 matching lines @@
   @override
   Document parseHtmlDocument(Source source) {
     if (!AnalysisEngine.isHtmlFileName(source.shortName)) {
       return null;
     }
     return computeResult(source, HTML_DOCUMENT);
   }
 
   @override
   AnalysisResult performAnalysisTask() {
-    return PerformanceStatistics.performAnaysis.makeCurrentWhile(() {
+    return PerformanceStatistics.performAnalysis.makeCurrentWhile(() {
       _evaluatePendingFutures();
       bool done = !driver.performAnalysisTask();
       List<ChangeNotice> notices = _getChangeNotices(done);
       if (notices != null) {
         int noticeCount = notices.length;
         for (int i = 0; i < noticeCount; i++) {
           ChangeNotice notice = notices[i];
           _notifyErrors(notice.source, notice.errors, notice.lineInfo);
         }
       }
@@ skipping 956 matching lines @@
     }
     DartSdk sdk = factory.dartSdk;
     if (sdk == null) {
       throw new IllegalArgumentException(
           "The source factory for an SDK analysis context must have a DartUriResolver");
     }
     return new AnalysisCache(
         <CachePartition>[AnalysisEngine.instance.partitionManager.forSdk(sdk)]);
   }
 }