Unified Desktop: Support 2xDSF display

ash/accelerators/accelerator_commands.h

Index: ash/accelerators/accelerator_commands.h
diff --git a/ash/accelerators/accelerator_commands.h b/ash/accelerators/accelerator_commands.h
index 6c12807d47dd6bbf7d9c38b733ed4d1824d550ae..e35ab2a5a62c1e32ebc27ef3ec2e5182fa0d131f 100644
--- a/ash/accelerators/accelerator_commands.h
+++ b/ash/accelerators/accelerator_commands.h
@@ -28,6 +28,15 @@ ASH_EXPORT void ToggleFullscreen();
 // Toggles touch HUD.
 ASH_EXPORT void ToggleTouchHudProjection();
 
+// True if the desktop zoom accelerator is enabled.
+bool IsInternalDisplayZoomEnabled();
+
+// Change internal display zooming up or down.
+ASH_EXPORT bool ZoomInternalDisplay(bool up);
+
+// Reset the display zooming to the default state.
+ASH_EXPORT void ResetInternalDisplayZoom();
+
 }  // namespace accelerators
 }  // namespace ash