Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

bindings/scripts/v8_utilities.py

Index: bindings/scripts/v8_utilities.py
diff --git a/bindings/scripts/v8_utilities.py b/bindings/scripts/v8_utilities.py
index 1cd44abbe378c6d69e80cb8f24d0d6a28e0f9958..1e8733a9ab764c81ebedc4be55b40692539130bb 100644
--- a/bindings/scripts/v8_utilities.py
+++ b/bindings/scripts/v8_utilities.py
@@ -35,7 +35,7 @@ import re
 
 from idl_types import IdlTypeBase
 import idl_types
-from idl_definitions import Exposure, IdlInterface
+from idl_definitions import Exposure, IdlInterface, IdlAttribute
 from v8_globals import includes
 
 ACRONYMS = [
@@ -125,7 +125,7 @@ def scoped_name(interface, definition, base_name):
     if partial_interface_implemented_as:
         return '%s::%s' % (partial_interface_implemented_as, base_name)
     if (definition.is_static or
-        definition.name in ('Constructor', 'NamedConstructor')):
+            definition.name in ('Constructor', 'NamedConstructor')):
         return '%s::%s' % (cpp_name(interface), base_name)
     return 'impl->%s' % base_name
 
@@ -176,7 +176,7 @@ def activity_logging_world_check(member):
     if 'LogActivity' not in extended_attributes:
         return False
     if ('PerWorldBindings' not in extended_attributes and
-        'LogAllWorlds' not in extended_attributes):
+            'LogAllWorlds' not in extended_attributes):
         return True
     return False
 
@@ -186,7 +186,7 @@ CALL_WITH_ARGUMENTS = {
     'ScriptState': 'scriptState',
     'ExecutionContext': 'executionContext',
     'ScriptArguments': 'scriptArguments.release()',
-    'ActiveWindow': 'callingDOMWindow(info.GetIsolate())',
+    'ActiveWindow': 'currentDOMWindow(info.GetIsolate())',
     'FirstWindow': 'enteredDOMWindow(info.GetIsolate())',
     'Document': 'document',
     'ThisValue': 'ScriptValue(scriptState, info.This())',
@@ -211,24 +211,11 @@ def call_with_arguments(call_with_values):
             if extended_attribute_value_contains(call_with_values, value)]
 
 
-# [Conditional]
-DELIMITER_TO_OPERATOR = {
-    '|': '||',
-    ',': '&&',
-}
-
-
-def conditional_string(definition_or_member):
-    extended_attributes = definition_or_member.extended_attributes
-    if 'Conditional' not in extended_attributes:
-        return None
-    return 'ENABLE(%s)' % extended_attributes['Conditional']
-
-
 # [Constructor], [NamedConstructor]
 def is_constructor_attribute(member):
     # TODO(yukishiino): replace this with [Constructor] and [NamedConstructor] extended attribute
-    return member.idl_type.name.endswith('Constructor')
+    return (type(member) == IdlAttribute and
+            member.idl_type.name.endswith('Constructor'))
 
 
 # [DeprecateAs]
@@ -236,7 +223,7 @@ def deprecate_as(member):
     extended_attributes = member.extended_attributes
     if 'DeprecateAs' not in extended_attributes:
         return None
-    includes.add('core/frame/UseCounter.h')
+    includes.add('core/frame/Deprecation.h')
     return extended_attributes['DeprecateAs']
 
 
@@ -248,6 +235,7 @@ EXPOSED_EXECUTION_CONTEXT_METHOD = {
     'SharedWorker': 'isSharedWorkerGlobalScope',
     'Window': 'isDocument',
     'Worker': 'isWorkerGlobalScope',
+    'Worklet': 'isWorkletGlobalScope',
 }
 
 
@@ -291,7 +279,7 @@ class ExposureSet:
 
     @staticmethod
     def _code(exposure):
-        exposed = ('context->%s()' %
+        exposed = ('executionContext->%s()' %
                    EXPOSED_EXECUTION_CONTEXT_METHOD[exposure.exposed])
         if exposure.runtime_enabled is not None:
             runtime_enabled = ('RuntimeEnabledFeatures::%sEnabled()' %
@@ -379,6 +367,29 @@ def measure_as(definition_or_member, interface):
     return None
 
 
+def runtime_feature_name(definition_or_member):
+    extended_attributes = definition_or_member.extended_attributes
+    if 'RuntimeEnabled' not in extended_attributes:
+        return None
+    return extended_attributes['RuntimeEnabled']
+
+
+def is_origin_trial_enabled(definition_or_member):
+    return 'OriginTrialEnabled' in definition_or_member.extended_attributes
+
+
+def origin_trial_name(definition_or_member):
+    return definition_or_member.extended_attributes['OriginTrialEnabled'] if is_origin_trial_enabled(definition_or_member) else None
+
+
+def origin_trial_enabled_function(definition_or_member):
+    trial_name = origin_trial_name(definition_or_member)
+    feature_name = runtime_feature_name(definition_or_member)
+    if not feature_name or not trial_name:
+        return
+    return 'OriginTrials::%sEnabled' % uncapitalize(feature_name)
+
+
 # [RuntimeEnabled]
 def runtime_enabled_function_name(definition_or_member):
     """Returns the name of the RuntimeEnabledFeatures function.
@@ -387,10 +398,16 @@ def runtime_enabled_function_name(definition_or_member):
     Given extended attribute RuntimeEnabled=FeatureName, return:
         RuntimeEnabledFeatures::{featureName}Enabled
     """
-    extended_attributes = definition_or_member.extended_attributes
-    if 'RuntimeEnabled' not in extended_attributes:
-        return None
-    feature_name = extended_attributes['RuntimeEnabled']
+    feature_name = runtime_feature_name(definition_or_member)
+
+    # If an origin trial is on the method/attribute, it overrides the runtime
+    # enabled status. For now, we are unconditionally installing these
+    # attributes/methods, so we are acting as though the runtime enabled
+    # function doesn't exist. (It is checked in the generated OriginTrials
+    # function, instead)
+    trial_name = origin_trial_name(definition_or_member)
+    if not feature_name or trial_name:
+        return
     return 'RuntimeEnabledFeatures::%sEnabled' % uncapitalize(feature_name)
 
 
@@ -401,17 +418,13 @@ def is_unforgeable(interface, member):
             not member.is_static)
 
 
-# [TypeChecking=Interface] / [LegacyInterfaceTypeChecking]
+# [LegacyInterfaceTypeChecking]
 def is_legacy_interface_type_checking(interface, member):
-    if not ('TypeChecking' in interface.extended_attributes or
-            'TypeChecking' in member.extended_attributes):
-        return True
-    if 'LegacyInterfaceTypeChecking' in member.extended_attributes:
-        return True
-    return False
+    return ('LegacyInterfaceTypeChecking' in interface.extended_attributes or
+            'LegacyInterfaceTypeChecking' in member.extended_attributes)
 
 
-# [Unforgeable], [Global], [PrimaryGlobal] and [DoNotExposeJSAccessors]
+# [Unforgeable], [Global], [PrimaryGlobal]
 def on_instance(interface, member):
     """Returns True if the interface's member needs to be defined on every
     instance object.
@@ -419,60 +432,57 @@ def on_instance(interface, member):
     The following members must be defiend on an instance object.
     - [Unforgeable] members
     - regular members of [Global] or [PrimaryGlobal] interfaces
-    - members on which [DoNotExposeJSAccessors] is specified
     """
-    # TODO(yukishiino): Implement this function following the spec.
-    return not on_prototype(interface, member)
+    if member.is_static:
+        return False
+
+    # TODO(yukishiino): Remove a hack for toString once we support
+    # Symbol.toStringTag.
+    if (interface.name == 'Window' and member.name == 'toString'):
+        return False
+
+    # TODO(yukishiino): Implement "interface object" and its [[Call]] method
+    # in a better way.  Then we can get rid of this hack.
+    if is_constructor_attribute(member):
+        return True
+
+    if ('PrimaryGlobal' in interface.extended_attributes or
+            'Global' in interface.extended_attributes or
+            'Unforgeable' in member.extended_attributes or
+            'Unforgeable' in interface.extended_attributes):
+        return True
+    return False
 
 
-# [ExposeJSAccessors]
 def on_prototype(interface, member):
     """Returns True if the interface's member needs to be defined on the
     prototype object.
 
     Most members are defined on the prototype object.  Exceptions are as
     follows.
-    - constant members
     - static members (optional)
     - [Unforgeable] members
     - members of [Global] or [PrimaryGlobal] interfaces
     - named properties of [Global] or [PrimaryGlobal] interfaces
-    However, if [ExposeJSAccessors] is specified, the member is defined on the
-    prototype object.
     """
-    # TODO(yukishiino): Implement this function following the spec.
-
-    if ('ExposeJSAccessors' in interface.extended_attributes and
-            'DoNotExposeJSAccessors' in interface.extended_attributes):
-        raise Exception('Both of ExposeJSAccessors and DoNotExposeJSAccessors are specified at a time in an interface: ' + interface.name)
-    if ('ExposeJSAccessors' in member.extended_attributes and
-            'DoNotExposeJSAccessors' in member.extended_attributes):
-        raise Exception('Both of ExposeJSAccessors and DoNotExposeJSAccessors are specified at a time on a member: ' + member.name + ' in an interface: ' + interface.name)
-
-    # Note that ExposeJSAccessors and DoNotExposeJSAccessors are more powerful
-    # than 'static', [Unforgeable] and [OverrideBuiltins].
-    if 'ExposeJSAccessors' in member.extended_attributes:
-        return True
-    if 'DoNotExposeJSAccessors' in member.extended_attributes:
-        return False
-
-    # These members must not be placed on prototype chains.
-    if (is_constructor_attribute(member) or
-            member.is_static or
-            is_unforgeable(interface, member) or
-            'OverrideBuiltins' in interface.extended_attributes):
+    if member.is_static:
         return False
 
-    # TODO(yukishiino): We should handle [Global] and [PrimaryGlobal] instead of
-    # Window.
-    if (interface.name == 'Window'):
-        return member.idl_type.name == 'EventHandler'
-
-    if 'ExposeJSAccessors' in interface.extended_attributes:
+    # TODO(yukishiino): Remove a hack for toString once we support
+    # Symbol.toStringTag.
+    if (interface.name == 'Window' and member.name == 'toString'):
         return True
-    if 'DoNotExposeJSAccessors' in interface.extended_attributes:
+
+    # TODO(yukishiino): Implement "interface object" and its [[Call]] method
+    # in a better way.  Then we can get rid of this hack.
+    if is_constructor_attribute(member):
         return False
 
+    if ('PrimaryGlobal' in interface.extended_attributes or
+            'Global' in interface.extended_attributes or
+            'Unforgeable' in member.extended_attributes or
+            'Unforgeable' in interface.extended_attributes):
+        return False
     return True
 
 
@@ -482,10 +492,10 @@ def on_interface(interface, member):
     interface object.
 
     The following members must be defiend on an interface object.
-    - constant members
     - static members
     """
-    # TODO(yukishiino): Implement this function following the spec.
+    if member.is_static:
+        return True
     return False