Remove native VK window height logic and wait for resizeTo to setup VK window height

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 25 matching lines @@
   CHECK(!details.dispatcher_destroyed);
 }
 
 base::LazyInstance<base::Time> g_keyboard_load_time_start =
     LAZY_INSTANCE_INITIALIZER;
 
 bool g_accessibility_keyboard_enabled = false;
 
 base::LazyInstance<GURL> g_override_content_url = LAZY_INSTANCE_INITIALIZER;
 
-// The ratio between the height of the keyboard and the screen when using the
-// usability keyboard.
-const float kUsabilityKeyboardHeightRatio = 1.0f;
-
-// The default ratio between the height of the keyboard and the screen.
-const float kDefaultKeyboardHeightRatio = 0.41f;
-
-// The ratio between the height of the keyboard and the screen when using the
-// accessibility keyboard.
-const float kAccessibilityKeyboardHeightRatio = 0.3f;
-
-float GetKeyboardHeightRatio(){
-  if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
-    return kUsabilityKeyboardHeightRatio;
-  } else if (keyboard::GetAccessibilityKeyboardEnabled()) {
-    return kAccessibilityKeyboardHeightRatio;
-  }
-  return kDefaultKeyboardHeightRatio;
-}
-
 bool g_touch_keyboard_enabled = false;
 
 }  // namespace
 
 namespace keyboard {
 
 gfx::Rect DefaultKeyboardBoundsFromWindowBounds(
     const gfx::Rect& window_bounds) {
-  const float kKeyboardHeightRatio = GetKeyboardHeightRatio();
+  // 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 =
-      static_cast<int>(window_bounds.height() * kKeyboardHeightRatio);
+      keyboard::IsKeyboardUsabilityExperimentEnabled() ?
+          window_bounds.height() : 0;
+
+  return KeyboardBoundsFromWindowBounds(window_bounds, keyboard_height);
+}
+
+gfx::Rect KeyboardBoundsFromWindowBounds(const gfx::Rect& window_bounds,
+                                         int keyboard_height) {
   return gfx::Rect(
       window_bounds.x(),
-      window_bounds.y() + window_bounds.height() - keyboard_height,
+      window_bounds.bottom() - keyboard_height,
       window_bounds.width(),
       keyboard_height);
 }
 
 void SetAccessibilityKeyboardEnabled(bool enabled) {
   g_accessibility_keyboard_enabled = enabled;
 }
 
 bool GetAccessibilityKeyboardEnabled() {
   return g_accessibility_keyboard_enabled;
@@ skipping 244 matching lines @@
 }
 
 void LogKeyboardControlEvent(KeyboardControlEvent event) {
   UMA_HISTOGRAM_ENUMERATION(
       "VirtualKeyboard.KeyboardControlEvent",
       event,
       keyboard::KEYBOARD_CONTROL_MAX);
 }
 
 }  // namespace keyboard