Add dynamic declaration to CssRectangle width/height setters

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 8f02998118df5db0e5ce942ae3a85e80a6a4ba09..e5866bb16e9421e9b65556667ea38a6c60ad46b6 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -20428,7 +20428,7 @@ class HttpRequest extends HttpRequestEventTarget {
   void send([body_OR_data]) native;
 
   /**
-   * Sets the value of an HTTP requst header.
+   * Sets the value of an HTTP request header.
    *
    * This method should be called after the request is opened, but before
    * the request is sent.
@@ -40652,7 +40652,7 @@ class _ContentCssRect extends CssRect {
    * `height` function in jQuery and the calculated `height` CSS value,
    * converted to a num in pixels.
    */
-  set height(newHeight) {
+  set height(dynamic newHeight) {
     if (newHeight is Dimension) {
       if (newHeight.value < 0) newHeight = new Dimension.px(0);
       _element.style.height = newHeight.toString();
@@ -40672,7 +40672,7 @@ class _ContentCssRect extends CssRect {
    * and the calculated
    * `width` CSS value, converted to a dimensionless num in pixels.
    */
-  set width(newWidth) {
+  set width(dynamic newWidth) {
     if (newWidth is Dimension) {
       if (newWidth.value < 0) newWidth = new Dimension.px(0);
       _element.style.width = newWidth.toString();
@@ -40832,7 +40832,7 @@ abstract class CssRect implements Rectangle<num> {
    *
    * Note that only the content height can actually be set via this method.
    */
-  set height(newHeight) {
+  set height(dynamic newHeight) {
     throw new UnsupportedError("Can only set height for content rect.");
   }
 
@@ -40846,7 +40846,7 @@ abstract class CssRect implements Rectangle<num> {
    *
    * Note that only the content width can be set via this method.
    */
-  set width(newWidth) {
+  set width(dynamic newWidth) {
     throw new UnsupportedError("Can only set width for content rect.");
   }