Gtk3: Fix inactive selection 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 847 matching lines @@
   focus_ring_color_ = frame_color;
 
   SetScrollbarColors();
 
   // Some GTK themes only define the text selection colors on the GtkEntry
   // class, so we need to use that for getting selection colors.
   active_selection_bg_color_ = native_theme_->GetSystemColor(
       ui::NativeTheme::kColorId_TextfieldSelectionBackgroundFocused);
   active_selection_fg_color_ = native_theme_->GetSystemColor(
       ui::NativeTheme::kColorId_TextfieldSelectionColor);
+#if GTK_MAJOR_VERSION == 2
   inactive_selection_bg_color_ = native_theme_->GetSystemColor(
       ui::NativeTheme::kColorId_TextfieldReadOnlyBackground);
   inactive_selection_fg_color_ = native_theme_->GetSystemColor(
       ui::NativeTheme::kColorId_TextfieldReadOnlyColor);
+#else
+  inactive_selection_bg_color_ =
+      GetBgColor("GtkEntry#entry:backdrop #selection:selected");
+  inactive_selection_fg_color_ =
+      GetFgColor("GtkEntry#entry:backdrop #selection:selected");
+#endif
 
   colors_[ThemeProperties::COLOR_TAB_THROBBER_SPINNING] =
       native_theme_->GetSystemColor(
           ui::NativeTheme::kColorId_ThrobberSpinningColor);
   colors_[ThemeProperties::COLOR_TAB_THROBBER_WAITING] =
       native_theme_->GetSystemColor(
           ui::NativeTheme::kColorId_ThrobberWaitingColor);
 
 #if GTK_MAJOR_VERSION > 2
   colors_[ThemeProperties::COLOR_TOOLBAR_BOTTOM_SEPARATOR] =
@@ skipping 164 matching lines @@
 
 float GtkUi::GetDeviceScaleFactor() const {
   return device_scale_factor_;
 }
 
 }  // namespace libgtkui
 
 views::LinuxUI* BuildGtkUi() {
   return new libgtkui::GtkUi;
 }