Use relative paths in GN files.

webrtc/modules/audio_processing/test/py_quality_assessment/BUILD.gn

 # Copyright (c) 2017 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")
 
@@ skipping 15 matching lines @@
     "apm_quality_assessment_gencfgs.py",
   ]
   outputs = [
     "$root_build_dir/py_quality_assessment/{{source_file_part}}",
   ]
   deps = [
     ":apm_configs",
     ":lib",
     ":output",
     "../..:audioproc_f",
-    "//resources/audio_processing/test/py_quality_assessment:probing_signals",
+    "../../../../../resources/audio_processing/test/py_quality_assessment:probing_signals",
   ]
 }
 
 copy("apm_configs") {
   testonly = true
   sources = [
     "apm_configs/default.json",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
@@ skipping 17 matching lines @@
     "quality_assessment/signal_processing.py",
     "quality_assessment/simulation.py",
     "quality_assessment/test_data_generation.py",
     "quality_assessment/test_data_generation_factory.py",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
     "$root_build_dir/py_quality_assessment/quality_assessment/{{source_file_part}}",
   ]
   deps = [
-    "//resources/audio_processing/test/py_quality_assessment:noise_tracks",
+    "../../../../../resources/audio_processing/test/py_quality_assessment:noise_tracks",
   ]
 }
 
 copy("output") {
   testonly = true
   sources = [
     "output/README.md",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
@@ skipping 12 matching lines @@
 }
 
 rtc_executable("fake_polqa") {
   testonly = true
   sources = [
     "quality_assessment/fake_polqa.cc",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   output_name = "py_quality_assessment/quality_assessment/fake_polqa"
   deps = [
-    "//webrtc:webrtc_common",
-    "//webrtc/base:rtc_base_approved",
+    "../../../..:webrtc_common",
+    "../../../../base:rtc_base_approved",
   ]
 }
 
 copy("lib_unit_tests") {
   testonly = true
   sources = [
     "quality_assessment/eval_scores_unittest.py",
     "quality_assessment/signal_processing_unittest.py",
     "quality_assessment/simulation_unittest.py",
     "quality_assessment/test_data_generation_unittest.py",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
     "$root_build_dir/py_quality_assessment/quality_assessment/{{source_file_part}}",
   ]
 }
 
 copy("scripts_unit_tests") {
   testonly = true
   sources = [
     "apm_quality_assessment_unittest.py",
   ]
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   outputs = [
     "$root_build_dir/py_quality_assessment/{{source_file_part}}",
   ]
 }