Fix false positive/negative resize_ack_pending_ in RenderWidgetHostImpl.

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 51dc59c8003fb25a1ad420963ba158e0e2df08d4..1f73ac9bd3921228cfb5adb95b442841b95ed935 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -796,7 +796,7 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   // hand is updated when the resize message is sent. This is very similar to
   // |resize_ack_pending_|, but the latter is not set if the new size has width
   // or height zero, which is why we need this too.
-  gfx::Size in_flight_size_;
+  gfx::Size last_requested_size_;
 
   // The next auto resize to send.
   gfx::Size new_auto_size_;