Add FakeDisplayDelegate for off device usage.

ui/display/display_switches.cc

Index: ui/display/display_switches.cc
diff --git a/ui/display/display_switches.cc b/ui/display/display_switches.cc
index 445b0c635900e693e5e5741da2349dd6f9be160e..b248622f7c6c38f6ce007591bf3d4ec4b62f3793 100644
--- a/ui/display/display_switches.cc
+++ b/ui/display/display_switches.cc
@@ -10,6 +10,10 @@ namespace switches {
 // TODO(rjkroege): Some of these have an "ash" prefix. When ChromeOS startup
 // scripts have been updated, the leading "ash" prefix should be removed.
 
+// Specifies the initial display bounds for VirtualDisplayDelegate, see class
+// for format details.
+const char kDisplayBounds[] = "display-bounds";

[rjkroege, 2016/09/12 20:31:05]

this is redundant with HostDisplayBounds? Refactor please?

[kylechar, 2016/09/13 14:15:01]

They're similar but incompatible, so I think a different name is appropriate?

Although, I think --display-config= is maybe a better flag name. The
--ash-window-host-bounds= no longer matches reality (it's used to specify much
more than just bounds) although it was probably accurate at some point.

+
 // Overrides the device scale factor for the browser UI and the contents.
 const char kForceDeviceScaleFactor[] = "force-device-scale-factor";