Gtk3: Fix GtkTextView colors

chrome/browser/ui/libgtkui/gtk_ui.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/libgtkui/gtk_ui.h"
 
 #include <math.h>
 #include <pango/pango.h>
 #include <X11/Xcursor/Xcursor.h>
 
@@ skipping 885 matching lines @@
   colors_[ThemeProperties::COLOR_TAB_TEXT] = toolbar_text_color;
   colors_[ThemeProperties::COLOR_BOOKMARK_TEXT] = toolbar_text_color;
   colors_[ThemeProperties::COLOR_BACKGROUND_TAB_TEXT] =
       color_utils::BlendTowardOppositeLuma(toolbar_text_color, 50);
 
   SkColor location_bar_border =
       GetBorderColor("GtkToolbar#toolbar GtkEntry#entry");
   if (SkColorGetA(location_bar_border))
     colors_[ThemeProperties::COLOR_LOCATION_BAR_BORDER] = location_bar_border;
 
-  inactive_selection_bg_color_ =
-      GetSelectedBgColor("GtkTextView#textview.view:backdrop");
+  inactive_selection_bg_color_ = GetSelectionBgColor(
+      GtkVersionCheck(3, 20) ? "GtkTextView#textview.view:backdrop "
+                               "#text:backdrop #selection:backdrop"
+                             : "GtkTextView:selected:backdrop");
   inactive_selection_fg_color_ =
-      GetSelectedTextColor("GtkTextView#textview.view:backdrop");
+      GetFgColor(GtkVersionCheck(3, 20) ? "GtkTextView#textview.view:backdrop "
+                                          "#text:backdrop #selection:backdrop"
+                                        : "GtkTextView:selected:backdrop");
 
   SkColor toolbar_button_border =
       GetBorderColor("GtkToolbar#toolbar GtkButton#button");
   colors_[ThemeProperties::COLOR_DETACHED_BOOKMARK_BAR_BACKGROUND] =
       toolbar_color;
   colors_[ThemeProperties::COLOR_BOOKMARK_BAR_INSTRUCTIONS_TEXT] =
       toolbar_text_color;
   // Separates the toolbar from the bookmark bar or butter bars.
   colors_[ThemeProperties::COLOR_TOOLBAR_BOTTOM_SEPARATOR] =
       toolbar_button_border;
@@ skipping 153 matching lines @@
 
 float GtkUi::GetDeviceScaleFactor() const {
   return device_scale_factor_;
 }
 
 }  // namespace libgtkui
 
 views::LinuxUI* BuildGtkUi() {
   return new libgtkui::GtkUi;
 }