Using relative path for GN for iOS.

webrtc/sdk/BUILD.gn

 # Copyright 2016 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")
 if (is_mac) {
@@ skipping 249 matching lines @@
 
       sources = common_objc_headers +
                 [ "objc/Framework/Headers/WebRTC/RTCNSGLVideoView.h" ]
 
       if (!build_with_chromium) {
         sources += [ "objc/Framework/Headers/WebRTC/RTCFileLogger.h" ]
       }
 
       deps = [
         ":rtc_sdk_peerconnection_objc",
-        "//webrtc/system_wrappers:field_trial_default",
-        "//webrtc/system_wrappers:metrics_default",
+        "../system_wrappers:field_trial_default",
+        "../system_wrappers:metrics_default",
       ]
 
       libs = [
         "AVFoundation.framework",
         "AudioToolbox.framework",
         "CoreGraphics.framework",
         "CoreMedia.framework",
         "GLKit.framework",
         "VideoToolbox.framework",
       ]
@@ skipping 20 matching lines @@
       sources = common_objc_headers
       public_headers = common_objc_headers
 
       if (!build_with_chromium) {
         sources += [ "objc/Framework/Headers/WebRTC/RTCFileLogger.h" ]
         public_headers += [ "objc/Framework/Headers/WebRTC/RTCFileLogger.h" ]
       }
 
       deps = [
         ":rtc_sdk_peerconnection_objc",
-        "//webrtc/system_wrappers:field_trial_default",
-        "//webrtc/system_wrappers:metrics_default",
+        "../system_wrappers:field_trial_default",
+        "../system_wrappers:metrics_default",
       ]
 
       libs = [
         "AVFoundation.framework",
         "AudioToolbox.framework",
         "CoreGraphics.framework",
         "CoreMedia.framework",
         "GLKit.framework",
         "VideoToolbox.framework",
       ]
 
       configs += [
         "..:common_objc",
         "//build/config/compiler:enable_arc",
       ]
 
       public_configs = [ ":rtc_sdk_common_objc_config" ]
 
       if (is_clang) {
         # Suppress warnings from the Chromium Clang plugins.
         # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
         configs -= [ "//build/config/clang:find_bad_constructs" ]
       }
     }
   }
 }