diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
index 776cb3f..9aa7bd1 100644
--- a/LayoutTests/ChangeLog
+++ b/LayoutTests/ChangeLog
@@ -1,3 +1,24 @@
+2019-05-16  Greg Doolittle  <gr3g@apple.com>
+
+        AX: Unship some ARIA string reflectors that are to-be-replaced by element reflection
+        https://bugs.webkit.org/show_bug.cgi?id=197764
+        <rdar://problem/50649689>
+
+        Reviewed by Chris Fleizach.
+
+        Specifically these:
+        - ariaActiveDescendant
+        - ariaControls
+        - ariaDescribedBy
+        - ariaDetails
+        - ariaErrorMessage
+        - ariaFlowTo
+        - ariaLabelledBy
+        - ariaOwns
+
+        * accessibility/ARIA-reflection-expected.txt: Updated.
+        * accessibility/ARIA-reflection.html: Updated.
+
 2019-05-16  John Wilander  <wilander@apple.com>
 
         Storage Access API: Call completion handlers in NetworkConnectionToWebProcess::hasStorageAccess() and NetworkConnectionToWebProcess::requestStorageAccess() when feature is off
diff --git a/LayoutTests/accessibility/ARIA-reflection-expected.txt b/LayoutTests/accessibility/ARIA-reflection-expected.txt
index cbf356b..9504b69 100644
--- a/LayoutTests/accessibility/ARIA-reflection-expected.txt
+++ b/LayoutTests/accessibility/ARIA-reflection-expected.txt
@@ -12,14 +12,6 @@
 element.setAttribute("role", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaActiveDescendant < - > aria-activedescendant
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaActiveDescendant"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-activedescendant", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaAtomic < - > aria-atomic
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -76,14 +68,6 @@
 element.setAttribute("aria-colspan", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaControls < - > aria-controls
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaControls"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-controls", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaCurrent < - > aria-current
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -92,22 +76,6 @@
 element.setAttribute("aria-current", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaDescribedBy < - > aria-describedby
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaDescribedBy"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-describedby", otherData);
-PASS element[currentProperty] is otherData
-
-Test ariaDetails < - > aria-details
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaDetails"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-details", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaDisabled < - > aria-disabled
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -116,14 +84,6 @@
 element.setAttribute("aria-disabled", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaErrorMessage < - > aria-errormessage
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaErrorMessage"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-errormessage", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaExpanded < - > aria-expanded
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -132,14 +92,6 @@
 element.setAttribute("aria-expanded", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaFlowTo < - > aria-flowto
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaFlowTo"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-flowto", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaHasPopup < - > aria-haspopup
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -180,14 +132,6 @@
 element.setAttribute("aria-label", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaLabelledBy < - > aria-labelledby
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaLabelledBy"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-labelledby", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaLevel < - > aria-level
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -236,14 +180,6 @@
 element.setAttribute("aria-orientation", otherData);
 PASS element[currentProperty] is otherData
 
-Test ariaOwns < - > aria-owns
-PASS element[currentProperty] is null
-PASS element.getAttribute(currentAttribute) is null
-element["ariaOwns"] = data;
-PASS element.getAttribute(currentAttribute) is data
-element.setAttribute("aria-owns", otherData);
-PASS element[currentProperty] is otherData
-
 Test ariaPlaceholder < - > aria-placeholder
 PASS element[currentProperty] is null
 PASS element.getAttribute(currentAttribute) is null
@@ -381,7 +317,7 @@
 PASS element[currentProperty] is otherData
 
 
-PASS count is 46
+PASS count is 38
 PASS successfullyParsed is true
 
 TEST COMPLETE
diff --git a/LayoutTests/accessibility/ARIA-reflection.html b/LayoutTests/accessibility/ARIA-reflection.html
index 0b639c1..323b189 100644
--- a/LayoutTests/accessibility/ARIA-reflection.html
+++ b/LayoutTests/accessibility/ARIA-reflection.html
@@ -59,7 +59,7 @@
         }
 
         debug("\n");
-        shouldBe("count", "46");
+        shouldBe("count", "38");
 
     } else {
         testFailed("Could not load accessibility controller");
diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index 38f453d..6e0da59 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,25 @@
+2019-05-16  Greg Doolittle  <gr3g@apple.com>
+
+        AX: Unship some ARIA string reflectors that are to-be-replaced by element reflection
+        https://bugs.webkit.org/show_bug.cgi?id=197764
+        <rdar://problem/50649689>
+
+        Reviewed by Chris Fleizach.
+
+        Specifically these:
+        - ariaActiveDescendant
+        - ariaControls
+        - ariaDescribedBy
+        - ariaDetails
+        - ariaErrorMessage
+        - ariaFlowTo
+        - ariaLabelledBy
+        - ariaOwns
+
+        Test: LayoutTests/accessibility/ARIA-reflections.html (updated)
+
+        * accessibility/AriaAttributes.idl:
+
 2019-05-16  Youenn Fablet  <youenn@apple.com>
 
         CoreAudioCaptureSource should be marked as an audio capture track
diff --git a/Source/WebCore/accessibility/AriaAttributes.idl b/Source/WebCore/accessibility/AriaAttributes.idl
index 8422b53..d2874a7 100644
--- a/Source/WebCore/accessibility/AriaAttributes.idl
+++ b/Source/WebCore/accessibility/AriaAttributes.idl
@@ -27,7 +27,6 @@
     EnabledAtRuntime=AriaReflection,
     NoInterfaceObject,
 ] interface AriaAttributes {
-    [Reflect=aria_activedescendant] attribute DOMString? ariaActiveDescendant;
     [Reflect=aria_atomic]           attribute DOMString? ariaAtomic;
     [Reflect=aria_autocomplete]     attribute DOMString? ariaAutoComplete;
     [Reflect=aria_busy]             attribute DOMString? ariaBusy;
@@ -35,27 +34,20 @@
     [Reflect=aria_colcount]         attribute DOMString? ariaColCount;
     [Reflect=aria_colindex]         attribute DOMString? ariaColIndex;
     [Reflect=aria_colspan]          attribute DOMString? ariaColSpan;
-    [Reflect=aria_controls]         attribute DOMString? ariaControls;
     [Reflect=aria_current]          attribute DOMString? ariaCurrent;
-    [Reflect=aria_describedby]      attribute DOMString? ariaDescribedBy;
-    [Reflect=aria_details]          attribute DOMString? ariaDetails;
     [Reflect=aria_disabled]         attribute DOMString? ariaDisabled;
-    [Reflect=aria_errormessage]     attribute DOMString? ariaErrorMessage;
     [Reflect=aria_expanded]         attribute DOMString? ariaExpanded;
-    [Reflect=aria_flowto]           attribute DOMString? ariaFlowTo;
     [Reflect=aria_haspopup]         attribute DOMString? ariaHasPopup;
     [Reflect=aria_hidden]           attribute DOMString? ariaHidden;
     [Reflect=aria_invalid]          attribute DOMString? ariaInvalid;
     [Reflect=aria_keyshortcuts]     attribute DOMString? ariaKeyShortcuts;
     [Reflect=aria_label]            attribute DOMString? ariaLabel;
-    [Reflect=aria_labelledby]       attribute DOMString? ariaLabelledBy;
     [Reflect=aria_level]            attribute DOMString? ariaLevel;
     [Reflect=aria_live]             attribute DOMString? ariaLive;
     [Reflect=aria_modal]            attribute DOMString? ariaModal;
     [Reflect=aria_multiline]        attribute DOMString? ariaMultiLine;
     [Reflect=aria_multiselectable]  attribute DOMString? ariaMultiSelectable;
     [Reflect=aria_orientation]      attribute DOMString? ariaOrientation;
-    [Reflect=aria_owns]             attribute DOMString? ariaOwns;
     [Reflect=aria_placeholder]      attribute DOMString? ariaPlaceholder;
     [Reflect=aria_posinset]         attribute DOMString? ariaPosInSet;
     [Reflect=aria_pressed]          attribute DOMString? ariaPressed;