cros: Enable ShowSplashScreenInDemoMode by default

Bug: 894270
Change-Id: Ibc35d9986fad4ec326806455389899959d280806
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1497539Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Commit-Queue: Wenzhao (Colin) Zang <wzang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638020}

chromeos/constants/chromeos_switches.cc

@@ -50,7 +50,7 @@ const base::Feature kShowPlayInDemoMode{"ShowPlayInDemoMode",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kShowSplashScreenInDemoMode{
-    "ShowSplashScreenInDemoMode", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ShowSplashScreenInDemoMode", base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kSupportCountryCustomizationInDemoMode{
     "SupportCountryCustomizationInDemoMode", base::FEATURE_ENABLED_BY_DEFAULT};