feat(benchmarks): Add basic dart transformer benchmarks.

Adds simple benchmarks for various transformation phases, as well as hello_world.
Does not integrate these into any benchmark frameworks yet.

modules/angular2/test/benchmark/transform/template_compiler/inline.dart

@@ -0,0 +1,48 @@
+library angular2.benchmark.transform.template_compiler.inline;
+
+import 'dart:async';
+import 'package:angular2/src/transform/common/options.dart';
+import 'package:angular2/src/transform/template_compiler/transformer.dart';
+import 'package:barback/barback.dart';
+import 'package:code_transformers/benchmarks.dart';
+import 'package:unittest/unittest.dart';
+
+Future main() => runBenchmark();
+
+allTests() {
+  test('Inline Template Compiler Benchmark Runs', runBenchmark);
+}
+
+Future runBenchmark() async {
+  var options = new TransformerOptions(['index.dart']);
+  var files = {new AssetId('a', 'web/a.ng_deps.dart'): aContents,};
+  var benchmark =
+      new TransformerBenchmark([[new TemplateCompiler(options)]], files);
+  print('\nRunning template_compiler inline benchmark...');
+  var result = await benchmark.measure();
+  print('Done, took ${result.round()}μs on average.');
+}
+
+const aContents = '''
+library examples.src.hello_world.index_common_dart;
+
+import 'hello.dart';
+import 'package:angular2/angular2.dart'
+    show bootstrap, Component, Decorator, Template, NgElement;
+
+bool _visited = false;
+void initReflector(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(HelloCmp, {
+      'factory': () => new HelloCmp(),
+      'parameters': const [const []],
+      'annotations': const [
+        const Component(selector: 'hello-app'),
+        const Template(
+            inline: '<button (click)="action()">go</button>{{greeting}}')
+      ]
+    });
+}
+''';

modules/angular2/test/benchmark/transform/template_compiler/url.dart

@@ -0,0 +1,55 @@
+library angular2.benchmark.transform.template_compiler.url;
+
+import 'dart:async';
+import 'package:angular2/src/transform/common/options.dart';
+import 'package:angular2/src/transform/template_compiler/transformer.dart';
+import 'package:barback/barback.dart';
+import 'package:code_transformers/benchmarks.dart';
+import 'package:unittest/unittest.dart';
+
+Future main() => runBenchmark();
+
+allTests() {
+  test('Url Template Compiler Benchmark Runs', runBenchmark);
+}
+
+Future runBenchmark() async {
+  var options = new TransformerOptions(['index.dart']);
+  var files = {
+    new AssetId('a', 'web/a.ng_deps.dart'): aContents,
+    new AssetId('a', 'web/template.html'): templateContents,
+  };
+  var benchmark =
+      new TransformerBenchmark([[new TemplateCompiler(options)]], files);
+  print('\nRunning template_compiler url benchmark...');
+  var result = await benchmark.measure();
+  print('Done, took ${result.round()}μs on average.');
+}
+
+const aContents = '''
+library examples.src.hello_world.index_common_dart;
+
+import 'hello.dart';
+import 'package:angular2/angular2.dart'
+    show bootstrap, Component, Decorator, Template, NgElement;
+
+bool _visited = false;
+void initReflector(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(HelloCmp, {
+      'factory': () => new HelloCmp(),
+      'parameters': const [const []],
+      'annotations': const [
+        const Component(selector: 'hello-app'),
+        const Template(url: 'template.html')
+      ]
+    });
+}
+''';
+
+const templateContents = '''
+<button (click)="action()">go</button>
+{{greeting}}
+''';