Remove keyboard usability mode

ui/keyboard/keyboard_util.cc

 // 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.
 
 #include "ui/keyboard/keyboard_util.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 41 matching lines @@
 
 }  // namespace
 
 namespace keyboard {
 
 gfx::Rect DefaultKeyboardBoundsFromWindowBounds(
     const gfx::Rect& window_bounds) {
   // Initialize default keyboard height to 0. The keyboard window height should
   // only be set by window.resizeTo in virtual keyboard web contents. Otherwise,
   // the default height may conflict with the new height and causing some
-  // strange animation issues. For keyboard usability experiments, a full screen
-  // virtual keyboard window is always preferred.
-  int keyboard_height =
-      keyboard::IsKeyboardUsabilityExperimentEnabled() ?
-          window_bounds.height() : 0;
-
-  return KeyboardBoundsFromWindowBounds(window_bounds, keyboard_height);
+  // strange animation issues.
+  return KeyboardBoundsFromWindowBounds(window_bounds, 0);
 }
 
 gfx::Rect KeyboardBoundsFromWindowBounds(const gfx::Rect& window_bounds,
                                          int keyboard_height) {
   return gfx::Rect(
       window_bounds.x(),
       window_bounds.bottom() - keyboard_height,
       window_bounds.width(),
       keyboard_height);
 }
@@ skipping 23 matching lines @@
 bool IsKeyboardEnabled() {
   // Accessibility setting prioritized over policy setting.
   if (g_accessibility_keyboard_enabled)
     return true;
   // Policy strictly disables showing a virtual keyboard.
   if (g_keyboard_show_override == keyboard::KEYBOARD_SHOW_OVERRIDE_DISABLED)
     return false;
   // Check if any of the flags are enabled.
   return CommandLine::ForCurrentProcess()->HasSwitch(
              switches::kEnableVirtualKeyboard) ||
-         IsKeyboardUsabilityExperimentEnabled() ||
          g_touch_keyboard_enabled ||
          (g_keyboard_show_override == keyboard::KEYBOARD_SHOW_OVERRIDE_ENABLED);
 }
 
-bool IsKeyboardUsabilityExperimentEnabled() {
-  return CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kKeyboardUsabilityExperiment);
-}
-
 bool IsKeyboardOverscrollEnabled() {
   if (!IsKeyboardEnabled())
     return false;
 
   // Users of the accessibility on-screen keyboard are likely to be using mouse
   // input, which may interfere with overscrolling.
   if (g_accessibility_keyboard_enabled)
     return false;
 
   // If overscroll enabled override is set, use it instead. Currently
@@ skipping 245 matching lines @@
 }
 
 void LogKeyboardControlEvent(KeyboardControlEvent event) {
   UMA_HISTOGRAM_ENUMERATION(
       "VirtualKeyboard.KeyboardControlEvent",
       event,
       keyboard::KEYBOARD_CONTROL_MAX);
 }
 
 }  // namespace keyboard