GTK: Use GTK+ theme selection colors and plumb them into webkit.

chrome/browser/gtk/gtk_theme_provider.h

Index: chrome/browser/gtk/gtk_theme_provider.h
diff --git a/chrome/browser/gtk/gtk_theme_provider.h b/chrome/browser/gtk/gtk_theme_provider.h
index b8a2379fac9c420be9cae0c77e6c8358effe7db1..1bdd12176b8de7ca54febf2879fd4dfadb2839d8 100644
--- a/chrome/browser/gtk/gtk_theme_provider.h
+++ b/chrome/browser/gtk/gtk_theme_provider.h
@@ -89,6 +89,18 @@ class GtkThemeProvider : public BrowserThemeProvider,
     return thumb_inactive_color_;
   }
   const SkColor& get_track_color() const { return track_color_; }
+  const SkColor& get_active_selection_bg_color() const {
+    return active_selection_bg_color_;
+  }
+  const SkColor& get_active_selection_fg_color() const {
+    return active_selection_fg_color_;
+  }
+  const SkColor& get_inactive_selection_bg_color() const {
+    return inactive_selection_bg_color_;
+  }
+  const SkColor& get_inactive_selection_fg_color() const {
+    return inactive_selection_fg_color_;
+  }
 
   // These functions do not add a ref to the returned pixbuf, and it should not
   // be unreffed.  If |native| is true, get the GTK_STOCK version of the icon.
@@ -175,6 +187,10 @@ class GtkThemeProvider : public BrowserThemeProvider,
   SkColor thumb_active_color_;
   SkColor thumb_inactive_color_;
   SkColor track_color_;
+  SkColor active_selection_bg_color_;
+  SkColor active_selection_fg_color_;
+  SkColor inactive_selection_bg_color_;
+  SkColor inactive_selection_fg_color_;
 
   // Image cache of lazily created images, created when requested by
   // GetBitmapNamed().