Converted IncognitoForced boolean policy into IncognitoModeAvailability enum policy.

chrome/browser/ui/browser_init.cc

Index: chrome/browser/ui/browser_init.cc
diff --git a/chrome/browser/ui/browser_init.cc b/chrome/browser/ui/browser_init.cc
index d6a6f3465af0b2a4eb1c980b503c556e77bd9c03..57c6a2ecd0cd0af2de80e3cd71b992746e207f83 100644
--- a/chrome/browser/ui/browser_init.cc
+++ b/chrome/browser/ui/browser_init.cc
@@ -31,6 +31,7 @@
 #include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/prefs/incognito_mode_availability_prefs.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
@@ -364,10 +365,11 @@ SessionStartupPref GetSessionStartupPref(const CommandLine& command_line,
   SessionStartupPref pref = SessionStartupPref::GetStartupPref(profile);
   if (command_line.HasSwitch(switches::kRestoreLastSession))
     pref.type = SessionStartupPref::LAST;
-  if ((command_line.HasSwitch(switches::kIncognito) ||
-       profile->GetPrefs()->GetBoolean(prefs::kIncognitoForced)) &&
-      pref.type == SessionStartupPref::LAST &&
-      profile->GetPrefs()->GetBoolean(prefs::kIncognitoEnabled)) {
+  // Safe to cast: value's been sanitized at initialization.
+  IncognitoModeAvailabilityPrefs::IncognitoModeAvailability incognito_avail =
+      static_cast<IncognitoModeAvailabilityPrefs::IncognitoModeAvailability>(
+          profile->GetPrefs()->GetInteger(prefs::kIncognitoModeAvailability));
+  if (incognito_avail == IncognitoModeAvailabilityPrefs::FORCED) {
     // We don't store session information when incognito. If the user has
     // chosen to restore last session and launched incognito, fallback to
     // default launch behavior.
@@ -536,10 +538,12 @@ bool BrowserInit::LaunchBrowser(const CommandLine& command_line,
   }
 #endif
 
+  // Safe to cast: the value has been sanitized at initialization.
+  IncognitoModeAvailabilityPrefs::IncognitoModeAvailability incognito_avail =
+      static_cast<IncognitoModeAvailabilityPrefs::IncognitoModeAvailability>(
+          profile->GetPrefs()->GetInteger(prefs::kIncognitoModeAvailability));
   // Continue with the incognito profile from here on if --incognito
-  if ((command_line.HasSwitch(switches::kIncognito) ||
-       profile->GetPrefs()->GetBoolean(prefs::kIncognitoForced)) &&
-      profile->GetPrefs()->GetBoolean(prefs::kIncognitoEnabled)) {
+  if (incognito_avail == IncognitoModeAvailabilityPrefs::FORCED) {
     profile = profile->GetOffTheRecordProfile();
   }