Move non-linux specific code from base/linux_util to app/gtk_util...

app/gtk_util.cc

 // Copyright (c) 2010 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 "app/gtk_util.h"
 
 #include <gtk/gtk.h>
 
 #include "app/l10n_util.h"
 #include "base/env_var.h"
@@ skipping 13 matching lines @@
   if (width)
     StringToDouble(l10n_util::GetStringUTF8(width_chars), &chars);
 
   double lines = 0;
   if (height)
     StringToDouble(l10n_util::GetStringUTF8(height_lines), &lines);
 
   GetWidgetSizeFromCharacters(widget, chars, lines, width, height);
 }
 
+uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride) {
+  if (stride == 0)
+    stride = width * 4;
+
+  uint8_t* new_pixels = static_cast<uint8_t*>(malloc(height * stride));
+
+  // We have to copy the pixels and swap from BGRA to RGBA.
+  for (int i = 0; i < height; ++i) {
+    for (int j = 0; j < width; ++j) {
+      int idx = i * stride + j * 4;
+      new_pixels[idx] = pixels[idx + 2];
+      new_pixels[idx + 1] = pixels[idx + 1];
+      new_pixels[idx + 2] = pixels[idx];
+      new_pixels[idx + 3] = pixels[idx + 3];
+    }
+  }
+
+  return new_pixels;
+}
+
 void GetWidgetSizeFromCharacters(
     GtkWidget* widget, double width_chars, double height_lines,
     int* width, int* height) {
   DCHECK(GTK_WIDGET_REALIZED(widget))
       << " widget must be realized to compute font metrics correctly";
   PangoContext* context = gtk_widget_create_pango_context(widget);
   PangoFontMetrics* metrics = pango_context_get_metrics(context,
       widget->style->font_desc, pango_context_get_language(context));
   if (width) {
     *width = static_cast<int>(
@@ skipping 13 matching lines @@
 void ApplyMessageDialogQuirks(GtkWidget* dialog) {
   if (gtk_window_get_modal(GTK_WINDOW(dialog))) {
     // Work around a KDE 3 window manager bug.
     scoped_ptr<base::EnvVarGetter> env(base::EnvVarGetter::Create());
     if (base::DESKTOP_ENVIRONMENT_KDE3 == GetDesktopEnvironment(env.get()))
       gtk_window_set_skip_taskbar_hint(GTK_WINDOW(dialog), FALSE);
   }
 }
 
 }  // namespace gtk_util