Revert of Enable the WebIDL [Exposed] annotation on an interface's members.

Source/bindings/scripts/v8_utilities.py

Index: Source/bindings/scripts/v8_utilities.py
diff --git a/Source/bindings/scripts/v8_utilities.py b/Source/bindings/scripts/v8_utilities.py
index 7b5baefa6c4404dbddc6b8b93dcad2e0457f91bd..674a1b8d9969b08a53404147c1c7e289db1f73f4 100644
--- a/Source/bindings/scripts/v8_utilities.py
+++ b/Source/bindings/scripts/v8_utilities.py
@@ -74,15 +74,6 @@
             extended_attribute_value_contains(extended_attributes[name], value))
 
 
-def sorted_extended_attribute_set(definition_or_member, name):
-    extended_attributes = definition_or_member.extended_attributes
-    if name not in extended_attributes:
-        return []
-
-    attribute_values = re.split('[|&]', extended_attributes[name])
-    return sorted(attribute_values)
-
-
 ################################################################################
 # String handling
 ################################################################################
@@ -234,48 +225,6 @@
     return extended_attributes['DeprecateAs']
 
 
-# [Exposed]
-EXPOSED_EXECUTION_CONTEXT_METHOD = {
-    'DedicatedWorker': 'isDedicatedWorkerGlobalScope',
-    'ServiceWorker': 'isServiceWorkerGlobalScope',
-    'SharedWorker': 'isSharedWorkerGlobalScope',
-    'Window': 'isDocument',
-    'Worker': 'isWorkerGlobalScope',
-}
-
-
-def exposed(definition_or_member, interface):
-    exposure_set = sorted_extended_attribute_set(definition_or_member, 'Exposed')
-    if not exposure_set:
-        return None
-
-    interface_exposure_set = expanded_exposure_set_for_interface(interface)
-
-    # Methods must not be exposed to a broader scope than their interface.
-    if not set(exposure_set).issubset(interface_exposure_set):
-        raise ValueError('Interface members\' exposure sets must be a subset of the interface\'s.')
-
-    exposure_checks = []
-    for environment in exposure_set:
-        # Methods must be exposed on one of the scopes known to Blink.
-        if environment not in EXPOSED_EXECUTION_CONTEXT_METHOD:
-            raise ValueError('Values for the [Exposed] annotation must reflect to a valid exposure scope.')
-
-        exposure_checks.append('context->%s()' % EXPOSED_EXECUTION_CONTEXT_METHOD[environment])
-
-    return ' || '.join(exposure_checks)
-
-
-def expanded_exposure_set_for_interface(interface):
-    exposure_set = sorted_extended_attribute_set(interface, 'Exposed')
-
-    # "Worker" is an aggregation for the different kinds of workers.
-    if 'Worker' in exposure_set:
-        exposure_set.extend(('DedicatedWorker', 'SharedWorker', 'ServiceWorker'))
-
-    return sorted(set(exposure_set))
-
-
 # [GarbageCollected], [WillBeGarbageCollected]
 def gc_type(definition):
     extended_attributes = definition.extended_attributes