Remove ax::mojom::Role::kMaxValue from switch statement.

Per Mojo docs (//mojo/public/cpp/bindings/README.md#Enums), kMaxValue
shares the value of the highest enumerator of the enum. In this case,
it shares the value of kWindow, that means kWindow is not being dealt
with in that switch statement.

Bug: None
Change-Id: I44a14426772b4b0e3e804e891cf2197a96650088
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2132159Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Jacobo Aragunde Pérez <jaragunde@igalia.com>
Cr-Commit-Position: refs/heads/master@{#756194}

third_party/blink/renderer/modules/accessibility/ax_object.cc

@@ -3727,6 +3727,7 @@ bool AXObject::NameFromContents(bool recursive) const {
     case ax::mojom::Role::kVideo:
     case ax::mojom::Role::kWebArea:
     case ax::mojom::Role::kWebView:
+    case ax::mojom::Role::kWindow:
       result = false;
       break;
 
@@ -3822,7 +3823,6 @@ bool AXObject::NameFromContents(bool recursive) const {
     }
 
     case ax::mojom::Role::kUnknown:
-    case ax::mojom::Role::kMaxValue:
       LOG(ERROR) << "ax::mojom::Role::kUnknown for " << GetNode();
       NOTREACHED();
       break;