Add isVisible parameter to WebPlugin::updateGeometry....

chrome/renderer/render_widget.cc

Index: chrome/renderer/render_widget.cc
===================================================================
--- chrome/renderer/render_widget.cc	(revision 24434)
+++ chrome/renderer/render_widget.cc	(working copy)
@@ -843,7 +843,11 @@
   size_t i = 0;
   for (; i < plugin_window_moves_.size(); ++i) {
     if (plugin_window_moves_[i].window == move.window) {
-      plugin_window_moves_[i] = move;
+      if (move.rects_valid) {
+        plugin_window_moves_[i] = move;
+      } else {
+        plugin_window_moves_[i].visible = move.visible;
+      }
       break;
     }
   }