Clean up names and remove unnecessary parameter

content/renderer/input/render_widget_input_handler_delegate.h

Index: content/renderer/input/render_widget_input_handler_delegate.h
diff --git a/content/renderer/input/render_widget_input_handler_delegate.h b/content/renderer/input/render_widget_input_handler_delegate.h
index 4c245f2eb0060b8d292b1e4c7ff34578dae364b0..6fd131283c9a2576114a7b2fcec5570e5aa0ca54 100644
--- a/content/renderer/input/render_widget_input_handler_delegate.h
+++ b/content/renderer/input/render_widget_input_handler_delegate.h
@@ -24,12 +24,7 @@ namespace content {
 
 class RenderWidgetInputHandler;
 
-enum class ShowIme { IF_NEEDED, HIDE_IME };
-
-enum class ChangeSource {
-  FROM_NON_IME,
-  FROM_IME,
-};
+enum class ShowIme { IF_NEEDED, DO_NOT_SHOW };
 
 // Consumers of RenderWidgetInputHandler implement this delegate in order to
 // transport input handling information across processes.
@@ -70,13 +65,7 @@ class CONTENT_EXPORT RenderWidgetInputHandlerDelegate {
 
   // |show_ime| should be ShowIme::IF_NEEDED iff the update may cause the ime to
   // be displayed, e.g. after a tap on an input field on mobile.
-  // |change_source| should be ChangeSource::FROM_NON_IME when the renderer has
-  // to wait for the browser to acknowledge the change before the renderer
-  // handles any more IME events. This is when the text change did not originate
-  // from the IME in the browser side, such as changes by JavaScript or
-  // autofill.
-  virtual void UpdateTextInputState(ShowIme show_ime,
-                                    ChangeSource change_source) = 0;
+  virtual void UpdateTextInputState(ShowIme show_ime) = 0;
 
   // Notifies that a gesture event is about to be handled.
   // Returns true if no further handling is needed. In that case, the event