More speedup of scrolling when many windowed plugins in a page. Scrolling is...

chrome/browser/render_widget_host.cc

Index: chrome/browser/render_widget_host.cc
===================================================================
--- chrome/browser/render_widget_host.cc	(revision 8294)
+++ chrome/browser/render_widget_host.cc	(working copy)
@@ -448,10 +448,7 @@
   }
 
   for (size_t i = 0; i < plugin_window_moves.size(); ++i) {
-    // Don't invalidate now because that would result in cross process calls
-    // that make scrolling slow.  Instead the window is invalidated
-    // asynchronously by the plugin code.
-    unsigned long flags = SWP_NOREDRAW;
+    unsigned long flags = 0;

[darin (slow to review), 2009/01/22 00:40:03]

maybe add some comments here about the choice of flags?  at least mention why
SWP_NOREDRAW is not specified?

[jam, 2009/01/22 01:03:10]

I was wondering about whether to add a comment or not, but then I thought no
need to comment on flags that aren't used..  Otherwise, why not comment on
SWP_NOCOPYBITS or SWP_NOSENDCHANGING right?

     const WebPluginGeometry& move = plugin_window_moves[i];
 
     if (move.visible)