[FYI] All-in-one OnCandidateWindow{Show,Update,Hide}

ui/base/ime/win/tsf_bridge.h

Index: ui/base/ime/win/tsf_bridge.h
diff --git a/ui/base/ime/win/tsf_bridge.h b/ui/base/ime/win/tsf_bridge.h
index 6256fac166adcf81093bd6cd25f32eb012090380..14254728beee8838a777391ce4189ed0bcdac23c 100644
--- a/ui/base/ime/win/tsf_bridge.h
+++ b/ui/base/ime/win/tsf_bridge.h
@@ -81,6 +81,11 @@ class UI_EXPORT TSFBridge {
   // Returns the focused text input client.
   virtual TextInputClient* GetFocusedTextInputClient() const = 0;
 
+  // Interface for for signalling candidate window events.
+  virtual void OnCandidateWindowShown() = 0;
+  virtual void OnCandidateWindowUpdated() = 0;
+  virtual void OnCandidateWindowHidden() = 0;
+
  protected:
   // Uses GetInstance() instead.
   TSFBridge();