Only allow ShowAppInfoFlow on Ash and Views platforms

Only allows ShowAppInfoFlow (and hence the app info dialog) to be
enabled on Ash and Views platforms (everything but Mac OS X for now).

This will not display the item in the context menu either.

BUG=382371

Review URL: https://codereview.chromium.org/322323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276646 0039d316-1c4b-4281-b951-d872f2087c98

ui/app_list/app_list_switches.cc

@@ -55,7 +55,11 @@ bool IsVoiceSearchEnabled() {
 }
 
 bool IsAppInfoEnabled() {
+#if defined(TOOLKIT_VIEWS)
   return !CommandLine::ForCurrentProcess()->HasSwitch(kDisableAppInfo);
+#else
+  return false;
+#endif
 }
 
 bool IsExperimentalAppListEnabled() {