SetDeviceScaleFactorForTest

ui/aura/window_tree_host.cc

Index: ui/aura/window_tree_host.cc
diff --git a/ui/aura/window_tree_host.cc b/ui/aura/window_tree_host.cc
index d8f9940ceb4c12b278ffce05de5907ad666d1355..8a4535de42add1badfbfe89db1716d465800f49b 100644
--- a/ui/aura/window_tree_host.cc
+++ b/ui/aura/window_tree_host.cc
@@ -273,6 +273,12 @@ void WindowTreeHost::OnHostResized(const gfx::Size& new_size) {
   gfx::Size adjusted_size(new_size);
   adjusted_size.Enlarge(output_surface_padding_.width(),
                         output_surface_padding_.height());
+  display::Display display =
+      display::Screen::GetScreen()->GetDisplayNearestWindow(window());
+
+  LOG(ERROR) << "OnHostResized called:" << new_size.ToString()
+             << ", display=" << display.ToString();
+
   // The compositor should have the same size as the native root window host.
   // Get the latest scale from display because it might have been changed.
   compositor_->SetScaleAndSize(GetDeviceScaleFactorFromDisplay(window()),