Don't disable the sticky mode when resizing the keyboard window.

ui/keyboard/keyboard_layout_manager.cc

 // Copyright 2014 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.
 
 #include "ui/keyboard/keyboard_layout_manager.h"
 
 #include "ui/compositor/layer_animator.h"
 #include "ui/keyboard/keyboard_controller.h"
 #include "ui/keyboard/keyboard_util.h"
 
@@ skipping 63 matching lines @@
     animator->StopAnimating();
 
   controller_->GetContainerWindow()->SetBounds(new_bounds);
   SetChildBoundsDirect(keyboard_, gfx::Rect(new_bounds.size()));
 
   if (old_bounds.height() == 0 && child->bounds().height() != 0 &&
       controller_->show_on_resize()) {
     // The window height is set to 0 initially or before switch to an IME in a
     // different extension. Virtual keyboard window may wait for this bounds
     // change to correctly animate in.
-    controller_->ShowKeyboard(false);
+    controller_->ShowKeyboard(controller_->keyboard_locked());
   } else {
     if (controller_->keyboard_mode() == FULL_WIDTH) {
       // We need to send out this notification only if keyboard is visible since
       // keyboard window is resized even if keyboard is hidden.
       if (controller_->keyboard_visible())
         controller_->NotifyKeyboardBoundsChanging(requested_bounds);
     } else if (controller_->keyboard_mode() == FLOATING) {
       controller_->NotifyKeyboardBoundsChanging(gfx::Rect());
     }
   }
 }
 
 }  // namespace keyboard