Adding Wayland support for ui/gfx

ui/gfx/gtk_util.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_GFX_GTK_UTIL_H_
 #define UI_GFX_GTK_UTIL_H_
 #pragma once
 
 #include <glib-object.h>
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/base/ui_export.h"
 
 typedef struct _GdkPixbuf GdkPixbuf;
 typedef struct _GdkRegion GdkRegion;
 typedef struct _GdkCursor GdkCursor;
 
+typedef struct _PangoContext PangoContext;
+
 class CommandLine;
 class SkBitmap;
 
 namespace gfx {
 
 class Rect;
 
 // Call gtk_init() using the argc and argv from command_line.
 // gtk_init() wants an argc and argv that it can mutate; we provide those,
 // but leave the original CommandLine unaltered.
 UI_EXPORT void GtkInitFromCommandLine(const CommandLine& command_line);
 
 // Convert and copy a SkBitmap to a GdkPixbuf. NOTE: this uses BGRAToRGBA, so
 // it is an expensive operation.  The returned GdkPixbuf will have a refcount of
 // 1, and the caller is responsible for unrefing it when done.
 UI_EXPORT GdkPixbuf* GdkPixbufFromSkBitmap(const SkBitmap* bitmap);
 
 // Modify the given region by subtracting the given rectangles.
 UI_EXPORT void SubtractRectanglesFromRegion(GdkRegion* region,
                                             const std::vector<Rect>& cutouts);
 
+// Creates and returns a PangoContext. The caller owns the context.
+PangoContext* GetPangoContext();
+
 // Returns the resolution (DPI) used by pango. A negative values means the
 // resolution hasn't been set.
 double GetPangoResolution();
 
 // Returns a static instance of a GdkCursor* object, sharable across the
 // process. Caller must gdk_cursor_ref() it if they want to assume ownership.
 UI_EXPORT GdkCursor* GetCursor(int type);
 
 // Change windows accelerator style to GTK style. (GTK uses _ for
 // accelerators.  Windows uses & with && as an escape for &.)
@@ skipping 22 matching lines @@
     void operator()(U* ptr) const {
       if (ptr)
         g_object_unref(ptr);
     }
   };
 
   typedef scoped_ptr_malloc<T, GObjectUnrefer<T> > Type;
 };
 
 #endif  // UI_GFX_GTK_UTIL_H_