Dart SDK Spelling b, c, and d.

pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart

Index: pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart b/pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
index 79ed9400685518878c9066d9c83fc99eb84f109c..9e4133148615846b282ece787f044e4658443e8f 100644
--- a/pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
+++ b/pkg/dev_compiler/tool/input_sdk/lib/js/dart2js/js_dart2js.dart
@@ -76,7 +76,7 @@
  * [JsObject.jsify] constructor, which converts Dart [Map]s and [Iterable]s
  * into JavaScript Objects and Arrays.
  *
- * The following expression creats a new JavaScript object with the properties
+ * The following expression creates a new JavaScript object with the properties
  * `a` and `b` defined:
  *
  *     var jsMap = new JsObject.jsify({'a': 1, 'b': 2});
@@ -568,8 +568,8 @@ Expando<Function> _interopCaptureThisExpando = new Expando<Function>();
 /// binding and calls [f] with the value of this passed as the first argument.
 /// When called from Dart, [null] will be passed as the first argument.
 ///
-/// See the documention for [allowInterop]. This method should only be used with
-/// package:js Dart-JavaScript interop.
+/// See the documentation for [allowInterop]. This method should only be used
+/// with package:js Dart-JavaScript interop.
 Function allowInteropCaptureThis(Function f) {
   var ret = _interopCaptureThisExpando[f];
   if (ret == null) {