Rename [LenientSetter] to [LegacyLenientSetter]

Part of #350.

Author: domenic

index.bs

@@ -1917,7 +1917,7 @@ ignored or an exception is thrown.
 </pre>
 
 Attributes whose type is a [=promise type=] must be [=read only=]. Additionally, they cannot have
-any of the [=extended attributes=] [{{LenientSetter}}], [{{PutForwards}}], [{{Replaceable}}], or
+any of the [=extended attributes=] [{{LegacyLenientSetter}}], [{{PutForwards}}], [{{Replaceable}}], or
 [{{SameObject}}].
 
 A [=regular attribute=]
@@ -1968,7 +1968,7 @@ are applicable to regular and static attributes:
 
 The following [=extended attributes=]
 are applicable only to regular attributes:
-[{{LenientSetter}}],
+[{{LegacyLenientSetter}}],
 [{{LenientThis}}],
 [{{PutForwards}}],
 [{{Replaceable}}],
@@ -9755,23 +9755,23 @@ are to be implemented.
 </div>
 
 
-<h4 id="LenientSetter" extended-attribute lt="LenientSetter">[LenientSetter]</h4>
+<h4 id="LegacyLenientSetter" extended-attribute lt="LegacyLenientSetter" oldids="LenientSetter">[LegacyLenientSetter]</h4>
 
 <div class="advisement">
 
-    Specifications should not use [{{LenientSetter}}]
+    Specifications should not use [{{LegacyLenientSetter}}]
     unless required for compatibility reasons.  Pages have been observed
     where authors have attempted to polyfill an IDL attribute by assigning
     to the property, but have accidentally done so even if the property
     exists.  In strict mode, this would cause an exception to be thrown,
-    potentially breaking page.  Without [{{LenientSetter}}],
+    potentially breaking page.  Without [{{LegacyLenientSetter}}],
     this could prevent a browser from shipping the feature.
     Editors who wish to use this feature are strongly advised to discuss this
-    by <a href="https://github.com/heycam/webidl/issues/new?title=Intent%20to%20use%20[LenientSetter]">filing an issue</a>
+    by <a href="https://github.com/heycam/webidl/issues/new?title=Intent%20to%20use%20[LegacyLenientSetter]">filing an issue</a>
     before proceeding.
 
     <small class="non-normative">
-        The [{{LenientSetter}}] [=extended attribute=] appears on
+        The [{{LegacyLenientSetter}}] [=extended attribute=] appears on
         the {{Document/fullscreenEnabled}} and {{Document/fullscreenEnabled}} [=attributes=]
         of the {{Document}} interface, and on
         the {{DocumentOrShadowRoot/fullscreenElement}} [=attribute=]
@@ -9780,40 +9780,40 @@ are to be implemented.
 
 </div>
 
-If the [{{LenientSetter}}]
+If the [{{LegacyLenientSetter}}]
 [=extended attribute=]
 appears on a [=read only=]
 [=regular attribute=],
 it indicates that a no-op setter will be generated for the attribute’s
 accessor property.  This results in erroneous assignments to the property
 in strict mode to be ignored rather than causing an exception to be thrown.
 
-The [{{LenientSetter}}] extended attribute
+The [{{LegacyLenientSetter}}] extended attribute
 must [=takes no arguments|take no arguments=].
 It must not be used on anything other than
 a [=read only=] [=regular attribute=].
 
-An attribute with the [{{LenientSetter}}]
+An attribute with the [{{LegacyLenientSetter}}]
 extended attribute must not also be declared
 with the [{{PutForwards}}]
 or [{{Replaceable}}] extended attributes.
 
-The [{{LenientSetter}}] extended attribute must not be used on an attribute declared on a
+The [{{LegacyLenientSetter}}] extended attribute must not be used on an attribute declared on a
 [=namespace=].
 
 See the <a href="#es-attributes">Attributes</a> section for how
-[{{LenientSetter}}] is to be implemented.
+[{{LegacyLenientSetter}}] is to be implemented.
 
 <div class="example">
 
     The following IDL fragment defines an interface that uses the
-    [{{LenientSetter}}] extended
+    [{{LegacyLenientSetter}}] extended
     attribute.
 
     <pre highlight="webidl">
         [Exposed=Window]
         interface Example {
-          [LenientSetter] readonly attribute DOMString x;
+          [LegacyLenientSetter] readonly attribute DOMString x;
           readonly attribute DOMString y;
         };
     </pre>
@@ -10322,7 +10322,7 @@ encountered more than once.
 
 An attribute with the [{{PutForwards}}]
 extended attribute must not also be declared
-with the [{{LenientSetter}}] or
+with the [{{LegacyLenientSetter}}] or
 [{{Replaceable}}] extended attributes.
 
 The [{{PutForwards}}]
@@ -10398,7 +10398,7 @@ extended attribute must
 
 An attribute with the [{{Replaceable}}]
 extended attribute must not also be declared
-with the [{{LenientSetter}}] or
+with the [{{LegacyLenientSetter}}] or
 [{{PutForwards}}] extended attributes.
 
 The [{{Replaceable}}]
@@ -11780,7 +11780,7 @@ in which case they are exposed on every object that [=implements=] the interface
         1. Assert: |attribute| is [=read only=].
         1. Return <emu-val>undefined</emu-val>.
     1.  If |attribute| is [=read only=] and does not have a
-        [{{LenientSetter}}], [{{PutForwards}}] or [{{Replaceable}}] [=extended attribute=], return
+        [{{LegacyLenientSetter}}], [{{PutForwards}}] or [{{Replaceable}}] [=extended attribute=], return
         <emu-val>undefined</emu-val>; there is no [=attribute setter=] function.
     1.  Assert: |attribute|'s type is not a [=promise type=].
     1.  Let |steps| be the following series of steps:
@@ -11805,7 +11805,7 @@ in which case they are exposed on every object that [=implements=] the interface
                 1.  Perform [=?=] <a abstract-op>CreateDataProperty</a>(|esValue|, |id|, |V|).
                 1.  Return <emu-val>undefined</emu-val>.
             1.  If |validThis| is false, then return <emu-val>undefined</emu-val>.
-            1.  If |attribute| is declared with a [{{LenientSetter}}] extended attribute, then
+            1.  If |attribute| is declared with a [{{LegacyLenientSetter}}] extended attribute, then
                 return <emu-val>undefined</emu-val>.
             1.  If |attribute| is declared with a [{{PutForwards}}] extended attribute, then:
                 1.  Let |Q| be [=?=] <a abstract-op>Get</a>(|esValue|, |id|).