Renaming dart:html library from 'html' to 'dart.html'

utils/apidoc/html_diff.dart

Index: utils/apidoc/html_diff.dart
diff --git a/utils/apidoc/html_diff.dart b/utils/apidoc/html_diff.dart
index e25174553474983a62b7340ac7299a8df8f1d204..c9aaf84bbf57b288f57252b19d49aac76d49ef83 100644
--- a/utils/apidoc/html_diff.dart
+++ b/utils/apidoc/html_diff.dart
@@ -26,9 +26,9 @@ const List<String> HTML_LIBRARY_NAMES = const [
     'dart:svg',
     'dart:web_audio'];
 const List<String> HTML_DECLARED_NAMES = const [
-    'html',
-    'svg',
-    'web_audio'];
+    'dart.dom.html',
+    'dart.dom.svg',
+    'dart.dom.web_audio'];
 
 /**
  * A class for computing a many-to-many mapping between the types and
@@ -234,4 +234,4 @@ class HtmlDiff {
     }
     return new Set.from([name]);
   }
-}
+}