Add support for virtual displays

ui/display/chromeos/display_util.cc

Index: ui/display/chromeos/display_util.cc
diff --git a/ui/display/chromeos/display_util.cc b/ui/display/chromeos/display_util.cc
index a62e47cd6e4b023d3d0f874a36526291eb01e6e1..93bfee0d5b12a158aa0883d8d5e84cdb2176de78 100644
--- a/ui/display/chromeos/display_util.cc
+++ b/ui/display/chromeos/display_util.cc
@@ -55,6 +55,7 @@ int GetDisplayPower(const std::vector<DisplaySnapshot*>& displays,
   for (size_t i = 0; i < displays.size(); ++i) {
     bool internal = displays[i]->type() == DISPLAY_CONNECTION_TYPE_INTERNAL;
     bool on =
+        displays[i]->type() == DISPLAY_CONNECTION_TYPE_VIRTUAL ||
         state == chromeos::DISPLAY_POWER_ALL_ON ||
         (state == chromeos::DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON &&
          !internal) ||
@@ -67,4 +68,9 @@ int GetDisplayPower(const std::vector<DisplaySnapshot*>& displays,
   return num_on_displays;
 }
 
+bool IsPhysicalDisplayType(ui::DisplayConnectionType type) {
+  return !(type &
+           (DISPLAY_CONNECTION_TYPE_NETWORK | DISPLAY_CONNECTION_TYPE_VIRTUAL));
+}
+
 }  // namespace ui