Revert of Remove all reference to carbon api

webrtc/media/media.gyp

Index: webrtc/media/media.gyp
diff --git a/webrtc/media/media.gyp b/webrtc/media/media.gyp
index 97b3b4256a5ea862f26c1c4e691b40515ffd66e2..ecd0a769c54d821fdd5e39bfd234b073b27ca46b 100644
--- a/webrtc/media/media.gyp
+++ b/webrtc/media/media.gyp
@@ -173,6 +173,24 @@
             },
           },
         }],
+        ['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.