Migrate IME state update flow

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index 9dbda85f5b3b8dfee7847f62b8ebfd0610215bce..866eb1bf2ae23cf421ea32474cbaf2f45ab0f709 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -263,17 +263,6 @@ class ContentViewCoreImpl : public ContentViewCore,
                        bool is_mobile_optimized_hint,
                        const gfx::SelectionBound& selection_start);
 
-  void UpdateImeAdapter(int text_input_type,
-                        int text_input_flags,
-                        int text_input_mode,
-                        const std::string& text,
-                        int selection_start,
-                        int selection_end,
-                        int composition_start,
-                        int composition_end,
-                        bool show_ime_if_needed,
-                        bool reply_to_request);
-
   bool HasFocus();
   void RequestDisallowInterceptTouchEvent();
   void OnGestureEventAck(const blink::WebGestureEvent& event,