Let CreateVideoDecoder take a cricket::VideoCodec.

webrtc/sdk/BUILD.gn

 # Copyright 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.
 
 import("../webrtc.gni")
 if (is_ios) {
@@ skipping 527 matching lines @@
         # https://developer.apple.com/library/mac/qa/qa1490/_index.html
         ldflags = [ "-ObjC" ]
 
         defines = [ "GTEST_RELATIVE_PATH" ]
         deps = [
           ":peerconnection_objc",
           ":peerconnectionfactory_objc",
           ":videotoolbox_objc",
           ":videotracksource_objc",
           "..//system_wrappers:system_wrappers_default",
+          "../media:rtc_media_base",
           "../modules:module_api",
           "../rtc_base:rtc_base_tests_utils",
           "../system_wrappers:system_wrappers_default",
           "//third_party/ocmock",
         ]
 
         if (is_ios) {
           sources += [ "objc/Framework/UnitTests/RTCAudioSessionTest.mm" ]
 
           # RTCMTLVideoView not supported on 32-bit arm
@@ skipping 216 matching lines @@
         public_deps = [
           "$rtc_libyuv_dir",
         ]
       } else {
         # Need to add a directory normally exported by libyuv.
         include_dirs = [ "$rtc_libyuv_dir/include" ]
       }
     }
   }
 }