Delete the GTK+ port of Chrome.

ui/gfx/geometry/insets.h

 // 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.
 
 #ifndef UI_GFX_GEOMETRY_INSETS_H_
 #define UI_GFX_GEOMETRY_INSETS_H_
 
 #include <string>
 
 #include "build/build_config.h"
 #include "ui/gfx/geometry/insets_base.h"
 #include "ui/gfx/geometry/insets_f.h"
 #include "ui/gfx/gfx_export.h"
 
-#if defined(TOOLKIT_GTK)
-typedef struct _GtkBorder GtkBorder;
-#endif
-
 namespace gfx {
 
 // An integer version of gfx::Insets.
 class GFX_EXPORT Insets : public InsetsBase<Insets, int> {
  public:
   Insets();
   Insets(int top, int left, int bottom, int right);
-#if defined(TOOLKIT_GTK)
-  explicit Insets(const GtkBorder& border);
-#endif
 
   ~Insets();
 
   Insets Scale(float scale) const {
     return Scale(scale, scale);
   }
 
   Insets Scale(float x_scale, float y_scale) const {
     return Insets(static_cast<int>(top() * y_scale),
                   static_cast<int>(left() * x_scale),
                   static_cast<int>(bottom() * y_scale),
                   static_cast<int>(right() * x_scale));
   }
 
   operator InsetsF() const {
     return InsetsF(top(), left(), bottom(), right());
   }
 
   // Returns a string representation of the insets.
   std::string ToString() const;
 };
 
 #if !defined(COMPILER_MSVC)
 extern template class InsetsBase<Insets, int>;
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_GEOMETRY_INSETS_H_