cc: Remove the --enable-partial-swap flag.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index efef1d4b93301632540abf152b354f01a73d0462..50c55b855265113c0f7eeba4f90cdc02b0415ce9 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -168,8 +168,11 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
         settings.top_controls_hide_threshold = hide_threshold;
   }
 
-  settings.partial_swap_enabled = widget->AllowPartialSwap() &&
-      cmd->HasSwitch(cc::switches::kEnablePartialSwap);
+#if !defined(USE_AURA)
+  // This flag only affects renderers that are not using ubercomp.
+  settings.partial_swap_enabled = widget->AllowPartialSwap();
+#endif
+
   settings.background_color_instead_of_checkerboard =
       cmd->HasSwitch(cc::switches::kBackgroundColorInsteadOfCheckerboard);
   settings.show_overdraw_in_tracing =