Support underline on Linux again.

chrome/browser/ui/libgtk2ui/gtk2_ui.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 45 matching lines @@
   // ui::LinuxInputMethodContextFactory:
   std::unique_ptr<ui::LinuxInputMethodContext> CreateInputMethodContext(
       ui::LinuxInputMethodContextDelegate* delegate,
       bool is_simple) const override;
 
   // gfx::LinuxFontDelegate:
   gfx::FontRenderParams GetDefaultFontRenderParams() const override;
   void GetDefaultFontDescription(
       std::string* family_out,
       int* size_pixels_out,
-      bool* italic_out,
+      int* style_out,
       gfx::Font::Weight* weight_out,
       gfx::FontRenderParams* params_out) const override;
 
   // ui::ShellDialogLinux:
   ui::SelectFileDialog* CreateSelectFileDialog(
       ui::SelectFileDialog::Listener* listener,
       ui::SelectFilePolicy* policy) const override;
 
   // ui::LinuxUI:
   void Initialize() override;
@@ skipping 170 matching lines @@
 }  // namespace libgtk2ui
 
 // Access point to the GTK2 desktop system. This should be the only symbol that
 // is exported in the library; everything else should be used through the
 // interface, because eventually this .so will be loaded through dlopen at
 // runtime so our main binary can conditionally load GTK2 or GTK3 or EFL or
 // QT or whatever.
 LIBGTK2UI_EXPORT views::LinuxUI* BuildGtk2UI();
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_UI_H_