Use real IDL types in unit test stubs.

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

Index: third_party/WebKit/Source/bindings/scripts/idl_definitions.py
diff --git a/third_party/WebKit/Source/bindings/scripts/idl_definitions.py b/third_party/WebKit/Source/bindings/scripts/idl_definitions.py
index 739fa8858b62cfa7ec373e45f01814d0db7f1470..8a79d043ea52c3e4911faa36cd647e9d8839cfe1 100644
--- a/third_party/WebKit/Source/bindings/scripts/idl_definitions.py
+++ b/third_party/WebKit/Source/bindings/scripts/idl_definitions.py
@@ -441,7 +441,13 @@ class IdlException(IdlInterface):
 ################################################################################
 
 class IdlAttribute(TypedObject):
-    def __init__(self, node):
+    def __init__(self, node=None):
+        self.is_read_only = False
+        self.is_static = False
+        self.name = None
+        if not node:
+            return
+
         self.is_read_only = bool(node.GetProperty('READONLY'))

[peria, 2016/12/15 04:57:08]

Could you merge these 3 lines with the new lines?

  self.is_read_only = bool(node....) if node else False
  self.is_static = bool(node...) if node else False
  self.name = node.GetName if node else None

I'm afraid setting no default values will cause errors.

[dglazkov, 2016/12/15 05:24:24]

They are set above, right?

[peria, 2016/12/15 05:33:40]

Yes, on this CL.
But my concern is same with bashi-san's comment on #456.
I hope we don't have an early return, if possible.

         self.is_static = bool(node.GetProperty('STATIC'))
         self.name = node.GetName()