IDL compiler: [PerContextEnabled] for getters

Source/bindings/scripts/unstable/v8_utilities.py

Index: Source/bindings/scripts/unstable/v8_utilities.py
diff --git a/Source/bindings/scripts/unstable/v8_utilities.py b/Source/bindings/scripts/unstable/v8_utilities.py
index d44cd53d8679d7d887a90c94183aac817f15bd8c..89481b5eb12428d186659941df2bb3fe4e10f26b 100644
--- a/Source/bindings/scripts/unstable/v8_utilities.py
+++ b/Source/bindings/scripts/unstable/v8_utilities.py
@@ -141,6 +141,15 @@ def generate_deprecate_as(member, contents, includes):
     includes.update(['core/page/UseCounter.h'])
 
 
+# [PerContextEnabled]
+def per_context_enabled_function_name(definition_or_member):
+    extended_attributes = definition_or_member.extended_attributes
+    if 'PerContextEnabled' not in extended_attributes:
+        return None
+    feature_name = extended_attributes['PerContextEnabled']
+    return 'ContextFeatures::%sEnabled' % uncapitalize(feature_name)
+
+
 # [RuntimeEnabled]
 def runtime_enabled_function_name(definition_or_member):
     """Returns the name of the RuntimeEnabledFeatures function.