Remove --echo-ext-path flag

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"
 
 namespace chromeos {
 namespace switches {
 
 // Path for app's OEM manifest file.
@@ skipping 39 matching lines @@
 const char kDisableQuickofficeComponentApp[] =
     "disable-quickoffice-component-app";
 
 // Disables volume adjust sound.
 const char kDisableVolumeAdjustSound[] = "disable-volume-adjust-sound";
 
 // Disables notifications about captive portals in session.
 const char kDisableNetworkPortalNotification[] =
     "disable-network-portal-notification";
 
-// Enables overriding the path for the default echo component extension.
-// Useful for testing.
-const char kEchoExtensionPath[]             = "echo-ext-path";
-
 // Enables switching between different cellular carriers from the UI.
 const char kEnableCarrierSwitching[]        = "enable-carrier-switching";
 
 // Enables the next generation version of ChromeVox. Only valid with
 // use_chromevox_next=1 within your GYP_DEFINES.
 const char kEnableChromeVoxNext[]           = "enable-chromevox-next";
 
 // Enables consumer management, which allows user to enroll, remotely lock and
 // locate the device.
 const char kEnableConsumerManagement[]      = "enable-consumer-management";
@@ skipping 140 matching lines @@
 const char kEnableFirstRunUITransitions[] = "enable-first-run-ui-transitions";
 
 // Forces first-run UI to be shown for every login.
 const char kForceFirstRunUI[] = "force-first-run-ui";
 
 // Enables testing for auto update UI.
 const char kTestAutoUpdateUI[] = "test-auto-update-ui";
 
 }  // namespace switches
 }  // namespace chromeos