Make it possible to set the display mode from Chromium

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index dfff5e5e77508cb6a8325cf88392c61f865bcc8b..8bda2b66063afc13b36b718f62e4b90e1576cded 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -592,6 +592,7 @@ bool RenderWidgetHostImpl::GetResizeParams(
         view_->DoTopControlsShrinkBlinkSize();
     resize_params->visible_viewport_size = view_->GetVisibleViewportSize();
     resize_params->is_fullscreen = IsFullscreen();
+    resize_params->display_mode = GetDisplayMode();
   }
 
   const bool size_changed =
@@ -604,6 +605,7 @@ bool RenderWidgetHostImpl::GetResizeParams(
       old_resize_params_->physical_backing_size !=
           resize_params->physical_backing_size ||
       old_resize_params_->is_fullscreen != resize_params->is_fullscreen ||
+      old_resize_params_->display_mode != resize_params->display_mode ||
       old_resize_params_->top_controls_height !=
           resize_params->top_controls_height ||
       old_resize_params_->top_controls_shrink_blink_size !=
@@ -1321,6 +1323,10 @@ bool RenderWidgetHostImpl::IsFullscreen() const {
   return false;
 }
 
+blink::WebDisplayMode RenderWidgetHostImpl::GetDisplayMode() const {
+  return blink::WebDisplayModeBrowser;
+}
+
 void RenderWidgetHostImpl::SetAutoResize(bool enable,
                                          const gfx::Size& min_size,
                                          const gfx::Size& max_size) {