Removing deprecated GTK-Views code.

ui/views/controls/textfield/gtk_views_textview.h

-// Copyright (c) 2011 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.
-
-#ifndef UI_VIEWS_CONTROLS_TEXTFIELD_GTK_VIEWS_TEXTVIEW_H_
-#define UI_VIEWS_CONTROLS_TEXTFIELD_GTK_VIEWS_TEXTVIEW_H_
-#pragma once
-
-#include <gdk/gdk.h>
-#include <gtk/gtktextview.h>
-
-namespace views {
-class NativeTextfieldGtk;
-}
-
-// Similar to GtkViewsEntry, GtkViewsTextView is a subclass of GtkTextView
-// with a border and ability to show a custom info when text view has no text.
-
-G_BEGIN_DECLS
-
-#define GTK_TYPE_VIEWS_TEXTVIEW        (gtk_views_textview_get_type())
-#define GTK_VIEWS_TEXTVIEW(obj) \
-    (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_VIEWS_TEXTVIEW, \
-    GtkViewsTextView))
-#define GTK_VIEWS_TEXTVIEW_CLASS(klass) \
-    (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_VIEWS_TEXTVIEW, \
-    GtkViewsTextViewClass))
-#define GTK_IS_VIEWS_TEXTVIEW(obj) \
-    (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_VIEWS_TEXTVIEW))
-#define GTK_IS_VIEWS_TEXTVIEW_CLASS(klass) \
-    (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_VIEWS_TEXTVIEW))
-#define GTK_VIEWS_TEXTVIEW_GET_CLASS(obj) \
-    (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_VIEWS_TEXTVIEW, \
-    GtkViewsTextView))
-
-typedef struct _GtkViewsTextView        GtkViewsTextView;
-typedef struct _GtkViewsTextViewClass   GtkViewsTextViewClass;
-
-struct _GtkViewsTextView {
-  GtkTextView text_view;
-  views::NativeTextfieldGtk* host;
-};
-
-struct _GtkViewsTextViewClass {
-  GtkTextViewClass parent_class;
-};
-
-GtkWidget* gtk_views_textview_new(views::NativeTextfieldGtk* host);
-
-GType gtk_views_textview_get_type();
-
-G_END_DECLS
-
-#endif  // UI_VIEWS_CONTROLS_TEXTFIELD_GTK_VIEWS_TEXTVIEW_H_