Adding Wayland support for ui/gfx

ui/gfx/gtk_util.cc

 // 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.
 
 #include "ui/gfx/gtk_util.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 #include <stdlib.h>
 
@@ skipping 146 matching lines @@
                                   const std::vector<Rect>& cutouts) {
   for (size_t i = 0; i < cutouts.size(); ++i) {
     GdkRectangle rect = cutouts[i].ToGdkRectangle();
     GdkRegion* rect_region = gdk_region_rectangle(&rect);
     gdk_region_subtract(region, rect_region);
     // TODO(deanm): It would be nice to be able to reuse the GdkRegion here.
     gdk_region_destroy(rect_region);
   }
 }
 
+PangoContext* GetPangoContext() {
+#if defined(USE_WAYLAND)
+  PangoFontMap* font_map = pango_cairo_font_map_get_default();
+  PangoContext* default_context = pango_font_map_create_context(font_map);
+#else
+  PangoContext* default_context = gdk_pango_context_get();
+#endif
+  return default_context;
+}
+
 double GetPangoResolution() {
   static double resolution;
   static bool determined_resolution = false;
   if (!determined_resolution) {
     determined_resolution = true;
-    PangoContext* default_context = gdk_pango_context_get();
+    PangoContext* default_context = GetPangoContext();
     resolution = pango_cairo_context_get_resolution(default_context);
     g_object_unref(default_context);
   }
   return resolution;
 }
 
 GdkCursor* GetCursor(int type) {
   static GdkCursorCache impl;
   return impl.GetCursorImpl(static_cast<GdkCursorType>(type));
 }
@@ skipping 20 matching lines @@
       new_pixels[idx + 1] = pixels[idx + 1];
       new_pixels[idx + 2] = pixels[idx];
       new_pixels[idx + 3] = pixels[idx + 3];
     }
   }
 
   return new_pixels;
 }
 
 }  // namespace gfx