Fix race between DPI and window size

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index fcf246c66a4d0efb0334d0c456b99720f5702c44..94807ef0e84a513680a02f72f2b268a065b0b1fb 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -738,6 +738,14 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   // True when waiting for RESIZE_ACK.
   bool resize_ack_pending_;
 
+  // Cached copy of the screen info so that it doesn't need to be updated every
+  // time the window is resized.
+  scoped_ptr<WebKit::WebScreenInfo> screen_info_;
+
+  // Set if screen_info_ may have changed and should be recomputed and force a
+  // resize message.
+  bool screen_info_out_of_date_;
+
   // The current size of the RenderWidget.
   gfx::Size current_size_;