Remove LoadSystemKeyboard()

ui/keyboard/content/keyboard_ui_content.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/content/keyboard_ui_content.h"
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/values.h"
 #include "content/public/browser/render_widget_host.h"
@@ skipping 156 matching lines @@
 KeyboardUIContent::KeyboardUIContent(content::BrowserContext* context)
     : browser_context_(context),
       default_url_(kKeyboardURL),
       window_bounds_observer_(new WindowBoundsChangeObserver(this)) {
 }
 
 KeyboardUIContent::~KeyboardUIContent() {
   ResetInsets();
 }
 
-void KeyboardUIContent::LoadSystemKeyboard() {
-  DCHECK(keyboard_contents_);
-  if (keyboard_contents_->GetURL() != default_url_) {
-    // TODO(bshe): The height of system virtual keyboard and IME virtual
-    // keyboard may different. The height needs to be restored too.
-    LoadContents(default_url_);
-  }
-}
-
 void KeyboardUIContent::UpdateInsetsForWindow(aura::Window* window) {
   aura::Window* keyboard_container =
       keyboard_controller()->GetContainerWindow();
   if (!ShouldWindowOverscroll(window))
     return;
 
   std::unique_ptr<content::RenderWidgetHostIterator> widgets(
       content::RenderWidgetHost::GetRenderWidgetHosts());
   while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
     content::RenderWidgetHostView* view = widget->GetView();
@@ skipping 169 matching lines @@
     shadow_.reset(new wm::Shadow());
     shadow_->Init(wm::ShadowElevation::LARGE);
     shadow_->layer()->SetVisible(true);
     contents_window->parent()->layer()->Add(shadow_->layer());
   }
 
   shadow_->SetContentBounds(contents_window->bounds());
 }
 
 }  // namespace keyboard