Revert of Remove all reference to carbon api

webrtc/media/media.gyp

 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 155 matching lines @@
           'msvs_settings': {
             'VCLibrarianTool': {
               'AdditionalDependencies': [
                 'd3d9.lib',
                 'gdi32.lib',
                 'strmiids.lib',
               ],
             },
           },
         }],
+        ['OS=="mac" and target_arch=="ia32"', {
+          'sources': [
+            'devices/carbonvideorenderer.cc',
+            'devices/carbonvideorenderer.h',
+          ],
+          'link_settings': {
+            'xcode_settings': {
+              'OTHER_LDFLAGS': [
+                '-framework Carbon',
+              ],
+            },
+          },
+        }],
+        ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
+          'defines': [
+            'CARBON_DEPRECATED=YES',
+          ],
+        }],
       ],
     },  # target rtc_media
   ],  # targets.
   'conditions': [
     ['include_tests==1', {
       'targets' : [
         {
           'target_name': 'rtc_unittest_main',
           'type': 'static_library',
           'dependencies': [
@@ skipping 163 matching lines @@
               'sources': [
                 'rtc_media_unittests.isolate',
               ],
             },
           ],
         }],
       ],  # conditions
     }],  # include_tests==1
   ],  # conditions
 }