Implement cross-origin attributes using access check interceptors.

third_party/WebKit/Source/bindings/scripts/v8_attributes.py

Index: third_party/WebKit/Source/bindings/scripts/v8_attributes.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_attributes.py b/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
index 2f0f27665031708fd2a7c25ff3a05e9fc7bd0a57..5873b2ac0d7a05b4951f01d4a14e9822856a0701 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
@@ -68,10 +68,11 @@ def attribute_context(interface, attribute, interfaces):
         includes.add('core/inspector/ConsoleMessage.h')
 
     # [CheckSecurity]
-    is_do_not_check_security = 'DoNotCheckSecurity' in extended_attributes
+    is_cross_origin = 'CrossOrigin' in extended_attributes
+    # TODO(dcheng): Does this actually need to take CrossOrigin into account?
     is_check_security_for_receiver = (
         has_extended_attribute_value(interface, 'CheckSecurity', 'Receiver') and
-        not is_do_not_check_security)
+        not is_cross_origin)
     is_check_security_for_return_value = (
         has_extended_attribute_value(attribute, 'CheckSecurity', 'ReturnValue'))
     if is_check_security_for_receiver or is_check_security_for_return_value:
@@ -142,6 +143,7 @@ def attribute_context(interface, attribute, interfaces):
         'is_ce_reactions': is_ce_reactions,
         'is_check_security_for_receiver': is_check_security_for_receiver,
         'is_check_security_for_return_value': is_check_security_for_return_value,
+        'is_cross_origin': 'CrossOrigin' in extended_attributes,
         'is_custom_element_callbacks': is_custom_element_callbacks,
         # TODO(yukishiino): Make all DOM attributes accessor-type properties.
         'is_data_type_property': is_data_type_property(interface, attribute),
@@ -527,18 +529,10 @@ def has_setter(interface, attribute):
     return is_writable(attribute)
 
 
-# [DoNotCheckSecurity], [Unforgeable]
+# [Unforgeable]
 def access_control_list(interface, attribute):
     extended_attributes = attribute.extended_attributes
     access_control = []
-    if 'DoNotCheckSecurity' in extended_attributes:
-        do_not_check_security = extended_attributes['DoNotCheckSecurity']
-        if do_not_check_security == 'Setter':
-            access_control.append('v8::ALL_CAN_WRITE')
-        else:
-            access_control.append('v8::ALL_CAN_READ')
-            if has_setter(interface, attribute):
-                access_control.append('v8::ALL_CAN_WRITE')
     if is_unforgeable(interface, attribute):
         access_control.append('v8::PROHIBITS_OVERWRITING')
     return access_control or ['v8::DEFAULT']