Consider the popup window position when the window shows upward. This patch depends on WebKit patch.

chrome/browser/renderer_host/render_widget_host_view_gtk.h

Index: chrome/browser/renderer_host/render_widget_host_view_gtk.h
diff --git a/chrome/browser/renderer_host/render_widget_host_view_gtk.h b/chrome/browser/renderer_host/render_widget_host_view_gtk.h
index 06655588d095ed64ccf402d7b68cab4e3c06372a..e9dfd3bb1d45645a2e3b765335fae89d85aa02e0 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_gtk.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_gtk.h
@@ -56,6 +56,7 @@ class RenderWidgetHostViewGtk : public RenderWidgetHostView {
   virtual void DidBecomeSelected();
   virtual void WasHidden();
   virtual void SetSize(const gfx::Size& size);
+  virtual void MoveTo(const gfx::Point& origin);
   virtual gfx::NativeView GetNativeView();
   virtual void MovePluginWindows(
       const std::vector<webkit_glue::WebPluginGeometry>& moves);