Manky attempt with TextInputClient

content/browser/accessibility/browser_accessibility.cc

Index: content/browser/accessibility/browser_accessibility.cc
diff --git a/content/browser/accessibility/browser_accessibility.cc b/content/browser/accessibility/browser_accessibility.cc
index cf99c1c8f8c74d551b30848aabee2b2e8fbefc50..d88c6a641e3f046d1d8e942a35279c10e0ad72c6 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -1129,6 +1129,10 @@ gfx::Rect BrowserAccessibility::GetScreenBoundsRect() const {
   return bounds;
 }
 
+ui::TextInputClient* BrowserAccessibility::GetTextInputClient() const {
+  return nullptr;  // Could BlinkAXTreeSource implement TextInputClient?
+}
+
 gfx::NativeViewAccessible BrowserAccessibility::HitTestSync(int x, int y) {
   auto* accessible = manager_->CachingAsyncHitTest(gfx::Point(x, y));
   if (!accessible)