Rename Date to DateTime.

sdk/lib/_internal/compiler/implementation/ssa/tracer.dart

 // Copyright (c) 2012, 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 tracer;
 
 import 'dart:io';
 import 'ssa.dart';
 import '../js_backend/js_backend.dart';
 import '../dart2jslib.dart';
@@ skipping 19 matching lines @@
   void traceCompilation(String methodName,
                         JavaScriptItemCompilationContext compilationContext) {
     if (!enabled) return;
     this.context = compilationContext;
     traceActive =
         SSA_TRACE_FILTER == null || methodName.contains(SSA_TRACE_FILTER);
     if (!traceActive) return;
     tag("compilation", () {
       printProperty("name", methodName);
       printProperty("method", methodName);
-      printProperty("date", new Date.now().millisecondsSinceEpoch);
+      printProperty("date", new DateTime.now().millisecondsSinceEpoch);
     });
   }
 
   void traceGraph(String name, HGraph graph) {
     if (!traceActive) return;
     tag("cfg", () {
       printProperty("name", name);
       visitDominatorTree(graph);
     });
   }
@@ skipping 492 matching lines @@
   }
 
   String visitTypeConversion(HTypeConversion node) {
     return "TypeConversion: ${temporaryId(node.checkedInput)} to ${node.type}";
   }
 
   String visitRangeConversion(HRangeConversion node) {
     return "RangeConversion: ${node.checkedInput}";
   }
 }