Remove ForceReclaimResources

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 b9cdc15aa7d1c0f90bcf7d33b0253d186ddf6da8..41e5f7a1e13fe2ab5343f2fde2a321b1f0d50dc8 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -921,6 +921,9 @@ void RenderWidgetCompositor::compositeAndReadbackAsync(
                                              callback, base::Passed(&result)));
           },
           callback, base::Passed(&main_thread_task_runner)));
+  // Force a redraw to ensure that the copy swap promise isn't cancelled due to
+  // no damage.
+  SetNeedsForcedRedraw();
   layer_tree_host_->QueueSwapPromise(
       delegate_->RequestCopyOfOutputForLayoutTest(std::move(request)));