Moving webrtc.gni up one level from build/

webrtc/modules/congestion_controller/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")
 
 rtc_static_library("congestion_controller") {
   sources = [
     "congestion_controller.cc",
     "delay_based_bwe.cc",
     "delay_based_bwe.h",
     "include/congestion_controller.h",
     "median_slope_estimator.cc",
     "median_slope_estimator.h",
     "probe_bitrate_estimator.cc",
@@ skipping 63 matching lines @@
       "../remote_bitrate_estimator:remote_bitrate_estimator_unittests",
       "../rtp_rtcp:rtp_rtcp",
       "//testing/gmock",
     ]
     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" ]
     }
   }
 }