Roll 50: Updated for push to origin/master.

tools/dom/templates/html/impl/impl_Element.darttemplate

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index a7a91c24c65601822b9123dc7f4bd3c53f87ba17..335ae8fb2d9bfb6e6ca0ce9b3dc43a74a5baa0c4 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -1341,6 +1341,12 @@ $endif
       base.href = document.baseUri;
       _parseDocument.head.append(base);
     }
+
+    // TODO(terry): Fixes Chromium 50 change no body after createHtmlDocument()
+    if (_parseDocument.body == null) {
+      _parseDocument.body = _parseDocument.createElement("body");
+    }
+
     var contextElement;
     if (this is BodyElement) {
       contextElement = _parseDocument.body;
@@ -1593,23 +1599,23 @@ $else
 
   @DomName('Element.offsetParent')
   @DocsEditable()
-  Element get offsetParent => _blink.BlinkElement.instance.offsetParent_Getter_(this);
+  Element get offsetParent => _blink.BlinkHTMLElement.instance.offsetParent_Getter_(this);
 
   @DomName('Element.offsetHeight')
   @DocsEditable()
-  int get offsetHeight => _blink.BlinkElement.instance.offsetHeight_Getter_(this);
+  int get offsetHeight => _blink.BlinkHTMLElement.instance.offsetHeight_Getter_(this);
 
   @DomName('Element.offsetLeft')
   @DocsEditable()
-  int get offsetLeft => _blink.BlinkElement.instance.offsetLeft_Getter_(this);
+  int get offsetLeft => _blink.BlinkHTMLElement.instance.offsetLeft_Getter_(this);
 
   @DomName('Element.offsetTop')
   @DocsEditable()
-  int get offsetTop => _blink.BlinkElement.instance.offsetTop_Getter_(this);
+  int get offsetTop => _blink.BlinkHTMLElement.instance.offsetTop_Getter_(this);
 
   @DomName('Element.offsetWidth')
   @DocsEditable()
-  int get offsetWidth => _blink.BlinkElement.instance.offsetWidth_Getter_(this);
+  int get offsetWidth => _blink.BlinkHTMLElement.instance.offsetWidth_Getter_(this);
 
   @DomName('Element.scrollHeight')
   @DocsEditable()