Fix ARIA attribute reflection for aria-selected and aria-setsize

Prior to this CL, the setsize and selected attributes were incorrectly
linked. There are now two separate attributes with their own reflected
properties.

Bug: 914469
Change-Id: I73c26e3685fc758537cbe0eb9e3bb98becc75bbb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2148112
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Auto-Submit: Mason Freed <masonfreed@chromium.org>
Cr-Commit-Position: refs/heads/master@{#759087}

third_party/blink/renderer/core/dom/aria_attributes.idl

@@ -39,7 +39,8 @@
     [CEReactions, Reflect=aria_rowcount] attribute DOMString? ariaRowCount;
     [CEReactions, Reflect=aria_rowindex] attribute DOMString? ariaRowIndex;
     [CEReactions, Reflect=aria_rowspan] attribute DOMString? ariaRowSpan;
-    [CEReactions, Reflect=aria_setsize] attribute DOMString? ariaSelected;
+    [CEReactions, Reflect=aria_selected] attribute DOMString? ariaSelected;
+    [CEReactions, Reflect=aria_setsize] attribute DOMString? ariaSetSize;
     [CEReactions, Reflect=aria_sort] attribute DOMString? ariaSort;
     [CEReactions, Reflect=aria_valuemax] attribute DOMString? ariaValueMax;
     [CEReactions, Reflect=aria_valuemin] attribute DOMString? ariaValueMin;

third_party/blink/web_tests/external/wpt/dom/nodes/aria-attribute-reflection.tentative.html

@@ -360,13 +360,24 @@ test(function(t) {
 }, "aria-rowspan attribute reflects.");
 </script>
 
+<div id="selected" aria-selected="true"></div>
+
+<script>
+test(function(t) {
+    var element = document.getElementById("selected");
+    assert_equals(element.ariaSelected, "true");
+    element.ariaSelected = "false";
+    assert_equals(element.getAttribute("aria-selected"), "false");
+}, "aria-selected attribute reflects.");
+</script>
+
 <div id="setsize" aria-setsize="10"></div>
 
 <script>
 test(function(t) {
     var element = document.getElementById("setsize");
-    assert_equals(element.ariaSelected, "10");
-    element.ariaSelected = "11";
+    assert_equals(element.ariaSetSize, "10");
+    element.ariaSetSize = "11";
     assert_equals(element.getAttribute("aria-setsize"), "11");
 }, "aria-setsize attribute reflects.");
 </script>

third_party/blink/web_tests/virtual/stable/webexposed/element-instance-property-listing-expected.txt

@@ -61,6 +61,7 @@ namespace http://www.w3.org/1999/xhtml
     property ariaRowIndex
     property ariaRowSpan
     property ariaSelected
+    property ariaSetSize
     property ariaSort
     property ariaValueMax
     property ariaValueMin
@@ -1218,6 +1219,7 @@ namespace http://www.w3.org/2000/svg
     property ariaRowIndex
     property ariaRowSpan
     property ariaSelected
+    property ariaSetSize
     property ariaSort
     property ariaValueMax
     property ariaValueMin

third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-expected.txt

@@ -1664,6 +1664,7 @@ interface Element : Node
     getter ariaRowIndex
     getter ariaRowSpan
     getter ariaSelected
+    getter ariaSetSize
     getter ariaSort
     getter ariaValueMax
     getter ariaValueMin
@@ -1791,6 +1792,7 @@ interface Element : Node
     setter ariaRowIndex
     setter ariaRowSpan
     setter ariaSelected
+    setter ariaSetSize
     setter ariaSort
     setter ariaValueMax
     setter ariaValueMin
@@ -1849,6 +1851,7 @@ interface ElementInternals
     getter ariaRowIndex
     getter ariaRowSpan
     getter ariaSelected
+    getter ariaSetSize
     getter ariaSort
     getter ariaValueMax
     getter ariaValueMin
@@ -1896,6 +1899,7 @@ interface ElementInternals
     setter ariaRowIndex
     setter ariaRowSpan
     setter ariaSelected
+    setter ariaSetSize
     setter ariaSort
     setter ariaValueMax
     setter ariaValueMin

third_party/blink/web_tests/webexposed/element-instance-property-listing-expected.txt

@@ -70,6 +70,7 @@ namespace http://www.w3.org/1999/xhtml
     property ariaRowIndex
     property ariaRowSpan
     property ariaSelected
+    property ariaSetSize
     property ariaSort
     property ariaValueMax
     property ariaValueMin
@@ -1279,6 +1280,7 @@ namespace http://www.w3.org/2000/svg
     property ariaRowIndex
     property ariaRowSpan
     property ariaSelected
+    property ariaSetSize
     property ariaSort
     property ariaValueMax
     property ariaValueMin

third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt

@@ -2024,6 +2024,7 @@ interface Element : Node
     getter ariaRowIndex
     getter ariaRowSpan
     getter ariaSelected
+    getter ariaSetSize
     getter ariaSort
     getter ariaValueMax
     getter ariaValueMin
@@ -2167,6 +2168,7 @@ interface Element : Node
     setter ariaRowIndex
     setter ariaRowSpan
     setter ariaSelected
+    setter ariaSetSize
     setter ariaSort
     setter ariaValueMax
     setter ariaValueMin
@@ -2235,6 +2237,7 @@ interface ElementInternals
     getter ariaRowIndex
     getter ariaRowSpan
     getter ariaSelected
+    getter ariaSetSize
     getter ariaSort
     getter ariaValueMax
     getter ariaValueMin
@@ -2292,6 +2295,7 @@ interface ElementInternals
     setter ariaRowIndex
     setter ariaRowSpan
     setter ariaSelected
+    setter ariaSetSize
     setter ariaSort
     setter ariaValueMax
     setter ariaValueMin