Removing defunct OpenMAX code.

media/base/media_switches.cc

 // Copyright (c) 2011 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 "media/base/media_switches.h"
 
 namespace switches {
 
 #if defined(OS_LINUX)
 // The Alsa device to use when opening an audio stream.
 const char kAlsaOutputDevice[] = "alsa-output-device";
 // The Alsa device to use when opening an audio input stream.
 const char kAlsaInputDevice[] = "alsa-input-device";
 #endif
 
 // Enable hardware decoding through gpu process.
 const char kEnableAcceleratedDecoding[]  = "enable-accelerated-decoding";
 
 // Enable x-adaptive URL scheme.
 const char kEnableAdaptive[] = "enable-adaptive";
 
-// Enable hardware decoding using OpenMax API.
-// In practice this is for ChromeOS ARM.
-const char kEnableOpenMax[] = "enable-openmax";
-
 // Set number of threads to use for video decoding.
 const char kVideoThreads[] = "video-threads";
 
 }  // namespace switches