Fix blurry content after disabling dev tools emulation

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 0079b3d9c0e7661e87ef5394808292fab620d0aa..f2cfe6df89089e1d84dbdbbf892b2d9b84fbdd2d 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -785,6 +785,10 @@ void RenderWidgetCompositor::setMutatorClient(
   layer_tree_host_->SetLayerTreeMutator(std::move(client));
 }
 
+void RenderWidgetCompositor::forceRecalculateRasterScales() {
+  layer_tree_host_->SetNeedsRecalculateRasterScales();
+}
+
 static_assert(static_cast<cc::EventListenerClass>(
                   blink::WebEventListenerClass::TouchStartOrMove) ==
                   cc::EventListenerClass::kTouchStartOrMove,