Fix painting glitch with text and NPAPI plugins. This was a regression from r167042. The problem wa…

content/renderer/webplugin_delegate_proxy.h

Index: content/renderer/webplugin_delegate_proxy.h
===================================================================
--- content/renderer/webplugin_delegate_proxy.h	(revision 186240)
+++ content/renderer/webplugin_delegate_proxy.h	(working copy)
@@ -300,6 +300,9 @@
   // True if we got an invalidate from the plugin and are waiting for a paint.
   bool invalidate_pending_;
 
+  // If the plugin is transparent or not.
+  bool transparent_;
+
   // The index in the transport_stores_ array of the current front buffer
   // (i.e., the buffer to display).
   int front_buffer_index_;