CodeGen: Create a default dictionary with an isolate by default

In the new code generator, dictionaries are expected to be created
with an isolate by default.
This CL makes the default value construction follow it.


Bug: 839389
Change-Id: I648304cf8df3e79ee3d2cdcb7b8b392bcc28f239
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2332025Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#794136}

third_party/blink/renderer/bindings/scripts/bind_gen/blink_v8_bridge.py

@@ -405,9 +405,11 @@ def make_default_value_expr(idl_type, default_value):
         assignment_value = "{}()".format(type_info.value_t)
     elif default_value.idl_type.is_object:
         dict_name = blink_class_name(idl_type.unwrap().type_definition_object)
-        value = _format("{}::Create()", dict_name)
+        value = _format("{}::Create(${isolate})", dict_name)
         initializer_expr = value
+        initializer_deps = ["isolate"]
         assignment_value = value
+        assignment_deps = ["isolate"]
     elif default_value.idl_type.is_boolean:
         value = "true" if default_value.value else "false"
         initializer_expr = value