Remove --enable-firewall-hole-punching flag, default to enabled.

chromeos/chromeos_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromeos/chromeos_switches.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 
 // TODO(rsorokin): alphabetize all of these switches so they
@@ skipping 306 matching lines @@
 const char kDisableCaptivePortalBypassProxy[] =
     "disable-captive-portal-bypass-proxy";
 
 // Disable automatic timezone update.
 const char kDisableTimeZoneTrackingOption[] =
     "disable-timezone-tracking-option";
 
 // Disable new GAIA sign-in flow.
 const char kDisableWebviewSigninFlow[] = "disable-webview-signin-flow";
 
-// Enable Chrome OS firewall hole-punching for Chrome Apps.
-const char kEnableFirewallHolePunching[] = "enable-firewall-hole-punching";
-
 // Enables searching for an app that supports a plugged in USB printer. When a
 // user plugs in USB printer, they are shown a notification offering to search
 // Chroem Web Store for an app that has printerProvider permission and can
 // handle the plugged in printer.
 const char kEnablePrinterAppSearch[] = "enable-printer-app-search";
 
 // Switches and optional value for Data Saver prompt on cellular networks.
 const char kDisableDataSaverPrompt[] = "disable-datasaver-prompt";
 const char kEnableDataSaverPrompt[] = "enable-datasaver-prompt";
 const char kDataSaverPromptDemoMode[] = "demo";
@@ skipping 42 matching lines @@
     return base::MemoryPressureMonitorChromeOS::
         THRESHOLD_AGGRESSIVE_TAB_DISCARD;
   if (option == kAggressiveThreshold)
     return base::MemoryPressureMonitorChromeOS::THRESHOLD_AGGRESSIVE;
 
   return base::MemoryPressureMonitorChromeOS::THRESHOLD_DEFAULT;
 }
 
 }  // namespace switches
 }  // namespace chromeos