Revert of Keep virtual keyboard visibility the same after enable an IME in a different extension

ui/keyboard/keyboard_controller.h

Index: ui/keyboard/keyboard_controller.h
diff --git a/ui/keyboard/keyboard_controller.h b/ui/keyboard/keyboard_controller.h
index 492a0ca00650981f9f7e3600cec9c34008cdbe78..f0ae012e996244abfc9bf3b518972f2a969cda76 100644
--- a/ui/keyboard/keyboard_controller.h
+++ b/ui/keyboard/keyboard_controller.h
@@ -93,8 +93,6 @@
   // Returns true if keyboard is currently visible.
   bool keyboard_visible() { return keyboard_visible_; }
 
-  bool show_on_resize() { return show_on_resize_; }
-
   // Returns the current keyboard bounds. When the keyboard is not shown,
   // an empty rectangle will get returned.
   const gfx::Rect& current_keyboard_bounds() {
@@ -155,7 +153,6 @@
 
   ui::InputMethod* input_method_;
   bool keyboard_visible_;
-  bool show_on_resize_;
   bool lock_keyboard_;
   ui::TextInputType type_;