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

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 5b1ee822b81b3d5e16c89c4ce59aa460513656a6..abfa3f6710a6b62292a7aa620209e5f19ea2c6ad 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -3363,11 +3363,17 @@ void RenderView::OnSetRendererPrefs(const RendererPreferences& renderer_prefs) {
   WebColorName name = WebKit::WebColorWebkitFocusRingColor;
   WebKit::setNamedColors(&name, &renderer_prefs.focus_ring_color, 1);
 
-  if (webview())
+  if (webview()) {
     webview()->setScrollbarColors(
         renderer_prefs.thumb_inactive_color,
         renderer_prefs.thumb_active_color,
         renderer_prefs.track_color);
+    webview()->setSelectionColors(
+        renderer_prefs.active_selection_bg_color,
+        renderer_prefs.active_selection_fg_color,
+        renderer_prefs.inactive_selection_bg_color,
+        renderer_prefs.inactive_selection_fg_color);
+  }
 #endif
 }