Loosening the coupling between WebRTC and //third_party/protobuf

webrtc/modules/audio_processing/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/config/arm.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 214 matching lines @@
     "vad/voice_gmm_tables.h",
     "voice_detection_impl.cc",
     "voice_detection_impl.h",
   ]
 
   defines = []
   deps = [
     "../..:webrtc_common",
     "../../audio/utility:audio_frame_operations",
     "../../base:gtest_prod",
+    "../../base:protobuf_utils",
     "../audio_coding:isac",
   ]
   public_deps = [
     ":audio_processing_c",
   ]
 
   if (apm_debug_dump) {
     defines += [ "WEBRTC_APM_DEBUG_DUMP=1" ]
   } else {
     defines += [ "WEBRTC_APM_DEBUG_DUMP=0" ]
@@ skipping 271 matching lines @@
       "vad/vad_audio_proc_unittest.cc",
       "vad/vad_circular_buffer_unittest.cc",
       "vad/voice_activity_detector_unittest.cc",
     ]
 
     deps = [
       ":audio_processing",
       ":audioproc_test_utils",
       "../..:webrtc_common",
       "../../base:gtest_prod",
+      "../../base:protobuf_utils",
       "../../base:rtc_base",
       "../../base:rtc_base_approved",
       "../../common_audio:common_audio",
       "../../system_wrappers:system_wrappers",
       "../../test:test_support",
       "../audio_coding:neteq_unittest_tools",
       "//testing/gmock",
       "//testing/gtest",
     ]
 
@@ skipping 118 matching lines @@
     deps = [
       ":audio_processing",
       ":audioproc_test_utils",
       "//testing/gtest",
     ]
     if (rtc_enable_intelligibility_enhancer) {
       defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=1" ]
     } else {
       defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=0" ]
     }
+
+    # TODO(mbonadei): remove this before landing this CL
+    include_dirs = [ "//third_party/protobuf/src" ]
   }
 
   if (rtc_enable_protobuf) {
     rtc_executable("unpack_aecdump") {
       testonly = true
       sources = [
         "test/unpack.cc",
       ]
 
       deps = [
@@ skipping 134 matching lines @@
 
     rtc_static_library("audioproc_protobuf_utils") {
       sources = [
         "test/protobuf_utils.cc",
         "test/protobuf_utils.h",
       ]
 
       deps = [
         ":audioproc_debug_proto",
         "../..:webrtc_common",
+        "../../base:protobuf_utils",
         "../../base:rtc_base_approved",
       ]
     }
   }
 }