diff --git a/sdk/lib/html/html_common/conversions_dartium.dart b/sdk/lib/html/html_common/conversions_dartium.dart
index 0f2c075..56ed9d5 100644
--- a/sdk/lib/html/html_common/conversions_dartium.dart
+++ b/sdk/lib/html/html_common/conversions_dartium.dart
@@ -176,11 +176,19 @@
     } else {
       func = getHtmlCreateFunction(jsTypeName);
       if (func == null) {
-        if (jsTypeName == 'auto-binding') {
-          func = getHtmlCreateFunction('HTMLTemplateElement');
-        } else if (jsObject.toString() == "[object HTMLElement]") {
-          // One last ditch effort could be a JS custom element.
-          func = getHtmlCreateFunction('HTMLElement');
+        // Start walking the prototype chain looking for a JS class.
+        var prototype = jsObject['__proto__'];
+        var keepWalking = true;
+        while (keepWalking && prototype.hasProperty('__proto__')) {
+          prototype = prototype['__proto__'];
+          if (prototype != null && prototype is Element &&
+              prototype.blink_jsObject != null) {
+            // We're a Dart class that's pointing to a JS class.
+            var blinkJso = prototype.blink_jsObject;
+            jsTypeName = blinkJso['constructor']['name'];
+            func = getHtmlCreateFunction(jsTypeName);
+            keepWalking = func == null;
+          }
         }
       }
     }
diff --git a/tools/VERSION b/tools/VERSION
index 6051ec3..85daf0b 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 13
 PATCH 0
 PRERELEASE 7
-PRERELEASE_PATCH 5
+PRERELEASE_PATCH 6
diff --git a/tools/deps/dartium.deps/DEPS b/tools/deps/dartium.deps/DEPS
index ca01b17..7cb4b7f9 100644
--- a/tools/deps/dartium.deps/DEPS
+++ b/tools/deps/dartium.deps/DEPS
@@ -14,7 +14,7 @@
   "dartium_chromium_commit": "62a7524d4f71c9e0858d24b0aa1bbff3a2d09bff",
   "chromium_base_revision": "297060",
   "dartium_webkit_branch": "/blink/branches/dart/2171_4",
-  "dartium_webkit_revision": "202693",
+  "dartium_webkit_revision": "202694",
 
   # We use mirrors of all github repos to guarantee reproducibility and
   # consistency between what users see and what the bots see.