Remove expired kEnableAccessibilityExposeDisplayNone from about:flags

This flag is still WIP, but in the meantime it doesn't need to part of
about:flags as we don't expect users to toggle it.

R=kschmi@microsoft.com

Bug: 1110626
Change-Id: I849bd807b609ad39d384177ba081a1109749c90d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2417637
Commit-Queue: Daniel Libby <dlibby@microsoft.com>
Auto-Submit: Daniel Libby <dlibby@microsoft.com>
Reviewed-by: Adam Ettenberger <Adam.Ettenberger@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#808600}

chrome/browser/about_flags.cc

@@ -4604,11 +4604,6 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kAccessibilityExposeARIAAnnotationsDescription, kOsAll,
      FEATURE_VALUE_TYPE(features::kEnableAccessibilityExposeARIAAnnotations)},
 
-    {"enable-accessibility-expose-display-none",
-     flag_descriptions::kAccessibilityExposeDisplayNoneName,
-     flag_descriptions::kAccessibilityExposeDisplayNoneDescription, kOsAll,
-     FEATURE_VALUE_TYPE(features::kEnableAccessibilityExposeDisplayNone)},
-
 #if !defined(OS_ANDROID)
     {"enable-accessibility-live-captions",
      flag_descriptions::kEnableAccessibilityLiveCaptionsName,

chrome/browser/flag-metadata.json

@@ -1049,11 +1049,6 @@
     "owners": [ "aleventhal@chromium.org", "//third_party/blink/renderer/modules/accessibility/OWNERS", "//ui/accessibility/OWNERS" ],
     "expiry_milestone": 85
   },
-  {
-    "name": "enable-accessibility-expose-display-none",
-    "owners": [ "adettenb@microsoft.com", "//third_party/blink/renderer/modules/accessibility/OWNERS", "//ui/accessibility/OWNERS" ],
-    "expiry_milestone": 82
-  },
   {
     "name": "enable-accessibility-live-captions",
     "owners": [ "abigailbklein@google.com", "evliu@google.com", "//ui/accessibility/OWNERS" ],

chrome/browser/flag_descriptions.cc

@@ -28,12 +28,6 @@ const char kAccessibilityExposeARIAAnnotationsDescription[] =
     "Expose annotation- prefixed roles from ARIA Annotations draft "
     "specification at https://w3c.github.io/annotation-aria/.";
 
-const char kAccessibilityExposeDisplayNoneName[] =
-    "Expose 'display: none' nodes for accessibility";
-const char kAccessibilityExposeDisplayNoneDescription[] =
-    "Expose 'display: none' nodes that have an HTML ID to the browser process "
-    "accessibility tree.";
-
 #if BUILDFLAG(ENABLE_PLUGINS)
 const char kAccessiblePDFFormName[] = "Accessible PDF Forms";
 const char kAccessiblePDFFormDescription[] =

chrome/browser/flag_descriptions.h

@@ -55,9 +55,6 @@ extern const char kAcceleratedVideoEncodeDescription[];
 extern const char kAccessibilityExposeARIAAnnotationsName[];
 extern const char kAccessibilityExposeARIAAnnotationsDescription[];
 
-extern const char kAccessibilityExposeDisplayNoneName[];
-extern const char kAccessibilityExposeDisplayNoneDescription[];
-
 #if BUILDFLAG(ENABLE_PLUGINS)
 extern const char kAccessiblePDFFormName[];
 extern const char kAccessiblePDFFormDescription[];