GTK Themes: Set bg/text colors for the download manager.

chrome/browser/gtk/download_shelf_gtk.h

Index: chrome/browser/gtk/download_shelf_gtk.h
diff --git a/chrome/browser/gtk/download_shelf_gtk.h b/chrome/browser/gtk/download_shelf_gtk.h
index afafd2725c5e04e51471c0019d4f15de51e5cafc..9c8e382473b2e735fd9299df69a7c3d42cd15285 100644
--- a/chrome/browser/gtk/download_shelf_gtk.h
+++ b/chrome/browser/gtk/download_shelf_gtk.h
@@ -18,6 +18,7 @@ class BaseDownloadItemModel;
 class Browser;
 class CustomDrawButton;
 class DownloadItemGtk;
+class GtkThemeProperties;
 class SlideAnimatorGtk;
 
 class DownloadShelfGtk : public DownloadShelf {
@@ -36,6 +37,9 @@ class DownloadShelfGtk : public DownloadShelf {
   // Returns the current height of the shelf.
   int GetHeight() const;
 
+  // Changes the color of the background shelf.
+  void UserChangedTheme(GtkThemeProperties* properties);
+
  private:
   // Remove |download_item| from the download shelf and delete it.
   void RemoveDownloadItem(DownloadItemGtk* download_item);
@@ -58,6 +62,9 @@ class DownloadShelfGtk : public DownloadShelf {
   // for an explanation of the widget layout.
   OwnedWidgetGtk shelf_;
 
+  // A GtkEventBox which we color.
+  GtkWidget* padding_bg_;
+
   // This hbox holds the link text and download icon. It also holds the
   // distinction of being the leftmost non-download item widget on the shelf.
   GtkWidget* link_hbox_;