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

bindings/IDLExtendedAttributes.txt

 #
 # This file describes all Blink IDL extended attributes and allowed values.
 # If any IDL file uses an extended attribute or values not listed below, the
 # build will fail.
 # If you would like to add a new extended attribute or value, please:
 #     (1) add the extended attribute or value to this file
 #     (2) add an explanation to the Blink IDL extended attributes document:
-#         http://www.chromium.org/blink/webidl/blink-idl-extended-attributes
+#         idl-extended-attributes.md (in this directory)
 #     (3) add appropriate test cases to run-bindings-tests
 #
 # The syntax of this file is as follows:
 #     - One extended attribute per one line: Name and (optionally) Values.
 #     - "Attr" means that the Attr does not take a value, i.e. [Attr].
 #     - "Attr=X" means that Attr takes a required value, which must be X;
 #       i.e. [Attr=X].
 #     - "Attr=X|Y|Z" means that Attr takes a required value, and the valid
 #       values are X, Y, and Z, and combinations thereof;
 #       e.g. [Attr=X], [Attr=Y], [Attr=X|Z].
-#       The separator must be | or &, so [Attr=X&Z] is also valid; the
-#       separator makes a difference for Conditional, but otherwise is simply
-#       a style convention.
+#       The separator must be | or &, so [Attr=X&Z] is also valid.
 #     - "Attr=|X|Y|Z" means that Attr takes an optional value, whose valid
 #       values (if present) are X, Y, and Z, and combinations thereof; e.g.
 #       [Attr], [Attr=X], [Attr=Y], [Attr=X|Z], [Attr=X|Y|Z], [Attr=X&Z].
 #       Note that including an empty value in the list, as in [Attr=X||Y],
 #       is NOT valid: the value is optional, but empty values are not allowed.
 #     - "Attr=*" means that Attr takes a required value, which can be
 #       arbitrary, and combinations thereof, e.g. [Attr=IndexedDB],
 #       [Attr=DeleteFunction], [Attr=X|Y].
 #     - "Attr=|*" means that Attr takes an optional value, which can be
 #       arbitrary, e.g. [Attr], [Attr=X].
 #     - "Attr=X|*" means that Attr takes an required value, which can be
 #       arbitrary, but that "X" is standard, e.g. [Attr=X], [Attr=Foo].
 #
 
-ActiveDOMObject
 CachedAttribute=*
 CallWith=ExecutionContext|ScriptState|ScriptArguments|ActiveWindow|FirstWindow|ThisValue
-CheckSecurity=Frame|Node|Window
+CheckSecurity=Receiver|ReturnValue
 Clamp
-Conditional=*
 Constructor
 # FIXME: remove [ConstructorCallWith=Document], as can instead use
 # [ConstructorCallWith=ExecutionContext] + toDocument(executionContext)
 ConstructorCallWith=ExecutionContext|ScriptState|Document
 Custom=|Getter|Setter|LegacyCallAsFunction|VisitDOMWrapper|PropertyGetter|PropertyEnumerator|PropertyQuery|CallPrologue|CallEpilogue
 CustomConstructor
 CustomElementCallbacks
 # Dartium specific attributes.
 # DartCustom can have no value or New if New an additional method is added (V8 will not see this method)
 DartCustom=|New|Setter|Getter
@@ skipping 12 matching lines @@
 Callback
 # TODO(terry): Used in dart.idl (look at eliminating).
 DartStrictTypeChecking
 # End of Dartium attributes.
 Default=Undefined
 DependentLifetime
 DeprecateAs=*
 DoNotCheckConstants
 DoNotCheckSecurity=|Setter
 DoNotCheckSignature
-DoNotExposeJSAccessors
 EnforceRange
-ExposeJSAccessors
 Exposed=*
+FlexibleArrayBufferView
 GarbageCollected
 Global=|*
-Immutable
 ImplementedAs=*
 ImplementedInPrivateScript
 Iterable
 LegacyInterfaceTypeChecking
 LegacyTreatAsPartialInterface
 LenientThis
 LogActivity=|GetterOnly|SetterOnly
 LogAllWorlds
 NewObject
 Measure
 MeasureAs=*
 NamedConstructor=*
 NoImplHeader
 NoInterfaceObject
 NotEnumerable
 OnlyExposedToPrivateScript
+OriginTrialEnabled=*
 OverrideBuiltins
 PartialInterfaceImplementedAs=*
 PermissiveDictionaryConversion
 PerWorldBindings
 PostMessage
 PrimaryGlobal=|*
 PutForwards=*
 RaisesException=|Getter|Setter|Constructor
 Reflect=|*
 ReflectEmpty=*
 ReflectInvalid=*
 ReflectMissing=*
 ReflectOnly=*
 Replaceable
 # Valid values for [RuntimeEnabled] are the Runtime Enabled Features, listed in
 # Source/core/page/RuntimeEnabledFeatures.in
 RuntimeEnabled=*
 SameObject
 SetWrapperReferenceFrom=*
 SetWrapperReferenceTo=*
 SetterCallWith=ExecutionContext|ScriptArguments|ActiveWindow|FirstWindow
 TreatNullAs=NullString|EmptyString
-TreatReturnedNullStringAs=Null|Undefined
 TreatUndefinedAs=NullString
-TypeChecking=Interface
 URL
 Unforgeable
 Unscopeable
 WillBeGarbageCollected