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

ui/keyboard/keyboard_controller.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_KEYBOARD_KEYBOARD_CONTROLLER_H_
 #define UI_KEYBOARD_KEYBOARD_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 75 matching lines @@
   // the instance. Calling ResetIntance with a new instance destroys the
   // previous one. May be called with NULL to clear the instance.
   static void ResetInstance(KeyboardController* controller);
 
   // Retrieve the active keyboard controller.
   static KeyboardController* GetInstance();
 
   // 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() {
     return current_keyboard_bounds_;
   }
 
   // Updates insets on web content window
   void UpdateWindowInsets(aura::Window* window);
 
  private:
@@ skipping 40 matching lines @@
   scoped_ptr<KeyboardControllerProxy> proxy_;
   scoped_ptr<aura::Window> container_;
   // CallbackAnimationObserver should destructed before container_ because it
   // uses container_'s animator.
   scoped_ptr<CallbackAnimationObserver> animation_observer_;
 
   scoped_ptr<WindowBoundsChangeObserver> window_bounds_observer_;
 
   ui::InputMethod* input_method_;
   bool keyboard_visible_;
+  bool show_on_resize_;
   bool lock_keyboard_;
   ui::TextInputType type_;
 
   ObserverList<KeyboardControllerObserver> observer_list_;
 
   base::WeakPtrFactory<KeyboardController> weak_factory_;
 
   // The currently used keyboard position.
   gfx::Rect current_keyboard_bounds_;
 
   static KeyboardController* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardController);
 };
 
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_KEYBOARD_CONTROLLER_H_