Moving webrtc.gni up one level from build/

webrtc/modules/audio_coding/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")
+import("../../webrtc.gni")
 import("audio_coding.gni")
 import("//build/config/arm.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 audio_codec_deps = [
   ":cng",
   ":g711",
   ":pcm16b",
 ]
 if (rtc_include_ilbc) {
@@ skipping 2027 matching lines @@
         ":neteq_unittest_proto",
       ]
     }
 
     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" ]
     }
   }
 }