Use shared implementation of Stopwatch.

dart/frog/leg/ssa/builder.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.
 
 class Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
   SourceString mapOperatorToMethodName(Operator op) {
     String name = op.source.stringValue;
@@ skipping 1567 matching lines @@
     HInstruction context = localsHandler.readThis();
     add(target);
     var inputs = <HInstruction>[target, context];
     addStaticSendArgumentsToList(node, element, inputs);
     push(new HInvokeSuper(selector, inputs));
   }
 
   visitStaticSend(Send node) {
     Selector selector = elements.getSelector(node);
     Element element = elements[node];
-    if (element.kind != ElementKind.FUNCTION &&
-        element.kind != ElementKind.GENERATIVE_CONSTRUCTOR) {
+    if (element.kind === ElementKind.GENERATIVE_CONSTRUCTOR) {
+      compiler.resolver.resolveMethodElement(element);
+      element = element.defaultImplementation;
+    } else if (element.kind != ElementKind.FUNCTION) {
       compiler.unimplemented(
           "SsaBuilder.visitStaticSend static field invocation",
           node: node);
     }
     HStatic target = new HStatic(element);
     add(target);
     var inputs = <HInstruction>[];
     inputs.add(target);
     addStaticSendArgumentsToList(node, element, inputs);
     push(new HInvokeStatic(selector, inputs));
@@ skipping 468 matching lines @@
   }
 
   visitCatchBlock(CatchBlock node) {
     visit(node.block);
   }
 
   visitTypedef(Typedef node) {
     compiler.unimplemented('SsaBuilder.visitTypedef', node: node);
   }
 }