Serialize the data argument to History's state-related APIs.

tools/dom/scripts/generator.py

Index: tools/dom/scripts/generator.py
diff --git a/tools/dom/scripts/generator.py b/tools/dom/scripts/generator.py
index 2cdc750cb08df551f60a4c1c003a785f62db9a7d..0f8867d0d14589c5e1a9dfe9e3e33c3f3f15a52f 100644
--- a/tools/dom/scripts/generator.py
+++ b/tools/dom/scripts/generator.py
@@ -732,6 +732,12 @@ dart2js_conversions = monitored.Dict('generator.dart2js_conversions', {
       Conversion('convertNativeToDart_SerializedScriptValue',
                  'dynamic', 'dynamic'),
 
+    # TODO(alanknight): This generates two variations for dart2js, because of
+    # the optional argument, but not in Dartium. Should do the same for both.
+    'any set History.pushState': _serialize_SSV,
+
+    'any set History.replaceState': _serialize_SSV,
+
     '* get History.state':
       Conversion('convertNativeToDart_SerializedScriptValue',
                  'dynamic', 'dynamic'),
@@ -1443,6 +1449,7 @@ def wrap_unwrap_type_blink(return_type, type_registry):
         return_type = return_type.replace('Html', 'HTML', 1)
     return (type_registry.HasInterface(return_type) or not(return_type) or
             return_type == 'Object' or
+            return_type == 'dynamic' or
             return_type == 'Future' or
             return_type == 'SqlDatabase' or # renamed to Database
             return_type == 'HTMLElement' or