Moved transport.h from webrtc/ to webrtc/api, created build target and updated dependencies.

webrtc/voice_engine/BUILD.gn

 # Copyright (c) 2014 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("../build/webrtc.gni")
 
@@ skipping 71 matching lines @@
   }
 
   public_deps = [
     "../modules/audio_coding",
   ]
   deps = [
     ":level_indicator",
     "..:webrtc_common",
     "../api:audio_mixer_api",
     "../api:call_api",
+    "../api:transport_api",
     "../base:rtc_base_approved",
     "../common_audio",
     "../logging:rtc_event_log_api",
     "../modules/audio_coding:audio_decoder_factory_interface",
     "../modules/audio_coding:audio_format_conversion",
     "../modules/audio_coding:builtin_audio_decoder_factory",
     "../modules/audio_coding:rent_a_codec",
     "../modules/audio_conference_mixer",
     "../modules/audio_device",
     "../modules/audio_processing",
@@ skipping 68 matching lines @@
 
     configs += [ ":channel_transport_warnings_config" ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "..:webrtc_common",
+      "../api:transport_api",
       "../system_wrappers",
       "//testing/gtest",
     ]
   }
 
   rtc_test("voice_engine_unittests") {
     deps = [
       ":channel_transport",
       ":voice_engine",
       "//testing/gmock",
@@ skipping 154 matching lines @@
         ]
       }
 
       if (!build_with_chromium && is_clang) {
         # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
         suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
       }
     }
   }
 }