CC Animations: Enable external animation host for ui::Compositor (Aura)

ui/compositor/compositor_switches.cc

Index: ui/compositor/compositor_switches.cc
diff --git a/ui/compositor/compositor_switches.cc b/ui/compositor/compositor_switches.cc
index 113cd5e34f8ba03dc125f1d441f45e7367979953..1a2c6ca55e337a08337c47a1192a80c18a87b473 100644
--- a/ui/compositor/compositor_switches.cc
+++ b/ui/compositor/compositor_switches.cc
@@ -15,12 +15,12 @@ const char kEnableHardwareOverlays[] = "enable-hardware-overlays";
 // Forces tests to produce pixel output when they normally wouldn't.
 const char kEnablePixelOutputInTests[] = "enable-pixel-output-in-tests";
 
+const char kUIDisableCompositorAnimationTimelines[] =
+    "ui-disable-compositor-animation-timelines";
+
 // Disable partial swap which is needed for some OpenGL drivers / emulators.
 const char kUIDisablePartialSwap[] = "ui-disable-partial-swap";
 
-const char kUIEnableCompositorAnimationTimelines[] =
-    "ui-enable-compositor-animation-timelines";
-
 const char kUIEnableRGBA4444Textures[] = "ui-enable-rgba-4444-textures";
 
 const char kUIEnableZeroCopy[] = "ui-enable-zero-copy";