Revert of Update TextSelection for non-user initiated events

content/browser/frame_host/render_widget_host_view_guest.cc

Index: content/browser/frame_host/render_widget_host_view_guest.cc
diff --git a/content/browser/frame_host/render_widget_host_view_guest.cc b/content/browser/frame_host/render_widget_host_view_guest.cc
index d196a991f7b17dd4d5f0c9d72850801cf6b2cfb3..ed78781aed937bd8e160d0cf3dc68e2469d19474 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.cc
+++ b/content/browser/frame_host/render_widget_host_view_guest.cc
@@ -410,13 +410,12 @@
 
 void RenderWidgetHostViewGuest::SelectionChanged(const base::string16& text,
                                                  size_t offset,
-                                                 const gfx::Range& range,
-                                                 bool user_initiated) {
+                                                 const gfx::Range& range) {
   RenderWidgetHostViewBase* view = should_forward_text_selection_
                                        ? GetOwnerRenderWidgetHostView()
                                        : platform_view_.get();
   if (view)
-    view->SelectionChanged(text, offset, range, user_initiated);
+    view->SelectionChanged(text, offset, range);
 }
 
 void RenderWidgetHostViewGuest::SelectionBoundsChanged(