Enable new-virtual-keyboard-behavior flag by default.

ui/keyboard/keyboard_ui.cc

 // Copyright 2015 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_ui.h"
 
 #include "base/command_line.h"
 #include "ui/aura/window.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/text_input_client.h"
@@ skipping 24 matching lines @@
     return;
 
   const aura::Window* keyboard_window = GetKeyboardWindow();
   const gfx::Rect keyboard_bounds_in_screen =
       keyboard_window->IsVisible() ? keyboard_window->GetBoundsInScreen()
                                    : gfx::Rect();
 
   // Use new virtual keyboard behavior only if the flag enabled and in
   // non-sticky mode.
   const bool new_vk_behavior =
-      (base::CommandLine::ForCurrentProcess()->HasSwitch(
-           ::switches::kUseNewVirtualKeyboardBehavior) &&
+      (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+           ::switches::kDisableNewVirtualKeyboardBehavior) &&
        !keyboard_controller_->keyboard_locked());
 
   if (new_vk_behavior) {
     GetInputMethod()->SetOnScreenKeyboardBounds(keyboard_bounds_in_screen);
   } else if (GetInputMethod()->GetTextInputClient()) {
     GetInputMethod()->GetTextInputClient()->EnsureCaretNotInRect(
         keyboard_bounds_in_screen);
   }
 }
 
 void KeyboardUI::SetController(KeyboardController* controller) {
   keyboard_controller_ = controller;
 }
 
 }  // namespace keyboard