Announce desk name as "Desk: <Desk Name>"

Bug: 1116229
Change-Id: I583ea76360fcaab0d5a9ec55adf80ff6432a0b9b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2368824Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Xiaodan Zhu <zxdan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800829}

ash/ash_strings.grd

@@ -1099,6 +1099,9 @@ This file contains the strings for ash.
       <message name="IDS_ASH_DESKS_INACTIVE_DESK_MINIVIEW_A11Y_EXTRA_TIP" desc="The accessibility tooltip read by screen readers for a highlighted inactive desk mini_view.">
         Inactive desk.
       </message>
+      <message name="IDS_ASH_DESKS_DESK_ACCESSIBLE_NAME" desc="The full accessible desk name">
+        Desk: <ph name="DESK_NAME">$1</ph>
+      </message>
 
       <!-- Status tray charging strings. -->
       <message name="IDS_ASH_STATUS_TRAY_LOW_POWER_CHARGER_TITLE" desc="The title of a notification indicating that a low-current USB charger has been connected.">

ash/ash_strings_grd/IDS_ASH_DESKS_DESK_ACCESSIBLE_NAME.png.sha1

+05991126a35bba34a97f6025c348afaee4f9e074
\ No newline at end of file

ash/wm/desks/desk_mini_view.cc

@@ -197,8 +197,10 @@ void DeskMiniView::GetAccessibleNodeData(ui::AXNodeData* node_data) {
   // Note that the desk may have already been destroyed.
   if (desk_) {
     // Announce desk name.
-    node_data->AddStringAttribute(ax::mojom::StringAttribute::kName,
-                                  base::UTF16ToUTF8(desk_->name()));
+    node_data->AddStringAttribute(
+        ax::mojom::StringAttribute::kName,
+        l10n_util::GetStringFUTF8(IDS_ASH_DESKS_DESK_ACCESSIBLE_NAME,
+                                  desk_->name()));
 
     node_data->AddStringAttribute(
         ax::mojom::StringAttribute::kValue,