Moved media mime type and codec checks to media/base/mime_util.*

components/mime_util/mime_util.gyp

 # Copyright 2015 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.
 
 {
   'targets': [
     {
       # GN version: //components/mime_util/mime_util
       'target_name': 'mime_util',
       'type': 'static_library',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../net/net.gyp:net',
       ],
       'sources': [
         'mime_util.cc',
         'mime_util.h',
       ],
+      'conditions': [
+        ['OS!="ios"', {
+          # iOS doesn't use and must not depend on //media
+          'dependencies': [
+            '../../media/media.gyp:media',
+          ],
+        }],
+      ],
     }
   ],
 }