Revert of Use experimental app list position whenever virtual keyboard is enabled.

ui/app_list/views/app_list_main_view.cc

 // Copyright 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/app_list/views/app_list_main_view.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 152 matching lines @@
   pagination_model_->SelectPage(0, false /* animate */);
   AddContentsView();
   Layout();
 }
 
 void AppListMainView::SetDragAndDropHostOfCurrentAppList(
     ApplicationDragAndDropHost* drag_and_drop_host) {
   contents_view_->SetDragAndDropHostOfCurrentAppList(drag_and_drop_host);
 }
 
-bool AppListMainView::ShouldCenterWindow() const {
-  return delegate_->ShouldCenterWindow();
-}
-
 void AppListMainView::PreloadIcons(gfx::NativeView parent) {
   ui::ScaleFactor scale_factor = ui::SCALE_FACTOR_100P;
   if (parent)
     scale_factor = ui::GetScaleFactorForNativeView(parent);
 
   float scale = ui::GetImageScale(scale_factor);
   // |pagination_model| could have -1 as the initial selected page and
   // assumes first page (i.e. index 0) will be used in this case.
   const int selected_page = std::max(0, pagination_model_->selected_page());
 
@@ skipping 72 matching lines @@
   // Resubmit the query via a posted task so that all observers for the
   // uninstall notification are notified.
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&AppListMainView::QueryChanged,
                  weak_ptr_factory_.GetWeakPtr(),
                  search_box_view_));
 }
 
 }  // namespace app_list