Extended implementation to use interface as arguments

third_party/WebKit/Source/bindings/scripts/v8_callback_function.py

Index: third_party/WebKit/Source/bindings/scripts/v8_callback_function.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_callback_function.py b/third_party/WebKit/Source/bindings/scripts/v8_callback_function.py
index 4900abac48256e8271b05a03698b66df6eac8176..78ee37ff9f8373aa863ca1429ba339d639ed7f19 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_callback_function.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_callback_function.py
@@ -27,9 +27,15 @@ def callback_function_context(callback_function):
     includes.update(CALLBACK_FUNCTION_CPP_INCLUDES)
     idl_type = callback_function.idl_type
     idl_type_str = str(idl_type)
+    forward_declarations = []
+    for argument in callback_function.arguments:
+        if argument.idl_type.is_interface_type:
+            forward_declarations.append(argument.idl_type)
+        argument.idl_type.add_includes_for_type(callback_function.extended_attributes)
     context = {
         'cpp_class': callback_function.name,
-        'cpp_includes': sorted(CALLBACK_FUNCTION_CPP_INCLUDES),
+        'cpp_includes': sorted(includes),
+        'forward_declarations': forward_declarations,

[bashi, 2016/09/23 05:45:18]

sorted(forward_declarations)

[lkawai, 2016/09/23 06:05:36]

Done.

         'header_includes': sorted(CALLBACK_FUNCTION_H_INCLUDES),
         'idl_type': idl_type_str,
         'return_cpp_type': (idl_type.cpp_type + '&') if idl_type.cpp_type != 'void' else None,