fe: minor change to benchmarks to match what the runners expect

pkg/compiler/tool/perf.dart

Index: pkg/compiler/tool/perf.dart
diff --git a/pkg/compiler/tool/perf.dart b/pkg/compiler/tool/perf.dart
index 4725014a8138b4396645ed1ee73c66602ac75bec..245cb4c56a32aa8f79dff39c0a8f77f9a4e23861 100644
--- a/pkg/compiler/tool/perf.dart
+++ b/pkg/compiler/tool/perf.dart
@@ -209,7 +209,7 @@ Token tokenize(SourceFile source) {
 void report(String name, int time) {
   var sb = new StringBuffer();
   sb.write('$name: $time us, ${time ~/ 1000} ms');
-  sb.write(', ${scanTotalChars * 1000 ~/ time} chars/ms');
+  sb.write(', ${time * 1000 ~/ scanTotalChars} ns/char');
   print('$sb');
 }
 
@@ -377,8 +377,8 @@ class MyCompiler extends CompilerImpl {
         });
 
         if (deferredLoadTask.isProgramSplit) {
-          enqueuer.resolution.applyImpact(
-              backend.computeDeferredLoadingImpact());
+          enqueuer.resolution
+              .applyImpact(backend.computeDeferredLoadingImpact());
         }
         enqueuer.resolution.applyImpact(backend.computeHelpersImpact());
         resolveLibraryMetadata();