overscroll: Take a screenshot at more appropriate times.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index ff0cc11f13f6f501e3e816fee1b725fa9cf6dd18..3181bc8a0c20fa4cbdc63e5453b46841a34797c9 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -970,6 +970,9 @@ void RenderWidget::DoDeferredUpdate() {
     return;
   }
 
+  if (is_swapped_out_)

[Charlie Reis, 2013/01/09 00:49:23]

Or just move this up into the is_hidden_ check above.  But then we're back to
patch 4.

+    return;
+
   if (is_accelerated_compositing_active_)
     using_asynchronous_swapbuffers_ = SupportsAsynchronousSwapBuffers();