Add [NoImplHeader] extended attribute

Source/bindings/scripts/compute_interfaces_info_overall.py

Index: Source/bindings/scripts/compute_interfaces_info_overall.py
diff --git a/Source/bindings/scripts/compute_interfaces_info_overall.py b/Source/bindings/scripts/compute_interfaces_info_overall.py
index 06395137ff93f63bec80fb55fb9b8815f1d05dfa..51cee60dc8c4df7ee2847b916a0ba949480b451d 100755
--- a/Source/bindings/scripts/compute_interfaces_info_overall.py
+++ b/Source/bindings/scripts/compute_interfaces_info_overall.py
@@ -228,10 +228,11 @@ def compute_interfaces_info_overall(info_individuals):
         # However, they are needed for legacy implemented interfaces that
         # are being treated as partial interfaces, until we remove these.
         # http://crbug.com/360435
-        implemented_interfaces_include_paths = [
-            implemented_interface_info['include_path']
-            for implemented_interface_info in implemented_interfaces_info
-            if implemented_interface_info['is_legacy_treat_as_partial_interface']]
+        implemented_interfaces_include_paths = []
+        for implemented_interface_info in implemented_interfaces_info:
+            if (implemented_interface_info['is_legacy_treat_as_partial_interface'] and
+                implemented_interface_info['include_path']):
+                implemented_interfaces_include_paths.append(implemented_interface_info['include_path'])
 
         interface_info.update({
             'dependencies_full_paths': (partial_interfaces_full_paths +