Fixing absolute path that was breaking chromium

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("../webrtc.gni")
 if (is_ios) {
@@ skipping 105 matching lines @@
         "CoreMedia.framework",
         "CoreVideo.framework",
         "OpenGL.framework",
       ]
     }
 
     deps = [
       ":objc_common",
       ":objc_corevideoframebuffer",
       ":objc_videotoolbox",
-      "//webrtc/api:libjingle_peerconnection_api",
-      "//webrtc/base:rtc_base",
-      "//webrtc/common_video",
-      "//webrtc/media:rtc_media_base",
+      "..:common_video",
+      "../api:libjingle_peerconnection_api",
+      "../base:rtc_base",
+      "../media:rtc_media_base",
     ]
 
     configs += [ "..:common_objc" ]
     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" ]
     }
   }
 
   rtc_static_library("objc_ui") {
@@ skipping 41 matching lines @@
           "objc/Framework/Headers/WebRTC/RTCMTLNSVideoView.h",
         ]
       }
       libs = [
         "CoreVideo.framework",
         "Metal.framework",
         "MetalKit.framework",
       ]
       deps = [
         ":objc_video",
         "//webrtc/api:video_frame_api",

[kjellander_webrtc, 2017/05/30 12:58:25]

here's more.
I think you better fix the whole file.

         "//webrtc/base:rtc_base_approved",
       ]
       configs += [ "..:common_objc" ]
       public_configs = [ ":objc_common_config" ]
     }
   }
 
   rtc_static_library("objc_peerconnection") {
     sources = [
       "objc/Framework/Classes/PeerConnection/RTCAVFoundationVideoSource+Private.h",
@@ skipping 101 matching lines @@
 
     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" ]
     }
 
     deps = [
       ":objc_common",
       ":objc_corevideoframebuffer",
       ":objc_video",
+      "../api:video_frame_api",
+      "../base:rtc_base",
+      "../media:rtc_media_base",
       "../pc:libjingle_peerconnection",
-      "//webrtc/api:video_frame_api",
-      "//webrtc/base:rtc_base",
-      "//webrtc/media:rtc_media_base",
     ]
 
     if (rtc_use_metal_rendering) {
       deps += [ ":objc_metal" ]
     }
 
     if (rtc_build_libyuv) {
       deps += [ "$rtc_libyuv_dir" ]
       public_deps = [
         "$rtc_libyuv_dir",
@@ skipping 26 matching lines @@
       # |-ObjC| flag needed to make sure category method implementations
       # are included:
       # https://developer.apple.com/library/mac/qa/qa1490/_index.html
       ldflags = [ "-ObjC" ]
 
       defines = [ "GTEST_RELATIVE_PATH" ]
       deps = [
         ":objc_peerconnection",
         "..//system_wrappers:system_wrappers_default",
         "../base:rtc_base_tests_utils",
+        "../system_wrappers:system_wrappers_default",
         "//third_party/ocmock",
-        "//webrtc/system_wrappers:system_wrappers_default",
       ]
 
       # RTCMTLVideoView not supported on 32-bit arm
       if (is_ios && current_cpu != "arm") {
         sources += [ "objc/Framework/UnitTests/RTCMTLVideoViewTests.mm" ]
         if (current_cpu != "arm64") {
           # Only include this file on simulator, as it's already
           # included in device builds.
           sources += [ "objc/Framework/Classes/Metal/RTCMTLVideoView.m" ]
           libs = [ "CoreVideo.framework" ]
@@ skipping 88 matching lines @@
         configs -= [ "//build/config/clang:find_bad_constructs" ]
       }
     }
   }
 
   rtc_static_library("rtc_sdk_objc") {
     complete_static_lib = true
     deps = [
       ":objc_peerconnection",
       ":objc_ui",
-      "//webrtc/system_wrappers:field_trial_default",
-      "//webrtc/system_wrappers:metrics_default",
+      "../system_wrappers:field_trial_default",
+      "../system_wrappers:metrics_default",
     ]
   }
 
   rtc_static_library("objc_corevideoframebuffer") {
     sources = [
       "objc/Framework/Classes/Video/corevideo_frame_buffer.cc",
       "objc/Framework/Classes/Video/corevideo_frame_buffer.h",
 
       # TODO(mbonadei): remove this backward compatibility header
       "objc/Framework/Classes/corevideo_frame_buffer.h",
@@ skipping 17 matching lines @@
       "objc/Framework/Classes/VideoToolbox/decoder.cc",
       "objc/Framework/Classes/VideoToolbox/decoder.h",
       "objc/Framework/Classes/VideoToolbox/encoder.h",
       "objc/Framework/Classes/VideoToolbox/encoder.mm",
       "objc/Framework/Classes/VideoToolbox/nalu_rewriter.cc",
       "objc/Framework/Classes/VideoToolbox/nalu_rewriter.h",
       "objc/Framework/Classes/VideoToolbox/videocodecfactory.cc",
       "objc/Framework/Classes/VideoToolbox/videocodecfactory.h",
     ]
 
-    configs += [ "//webrtc:common_objc" ]
+    configs += [ "..:common_objc" ]
 
     deps = [
       ":objc_common",
       ":objc_corevideoframebuffer",
+      "..:common_video",
       "../base:rtc_base_approved",
-      "//webrtc/common_video",
-      "//webrtc/media:rtc_media",
-      "//webrtc/media:rtc_media_base",
-      "//webrtc/modules:module_api",
-      "//webrtc/modules/video_coding:video_coding_utility",
-      "//webrtc/modules/video_coding:webrtc_h264",
-      "//webrtc/system_wrappers",
+      "../media:rtc_media",
+      "../media:rtc_media_base",
+      "../modules:module_api",
+      "../modules/video_coding:video_coding_utility",
+      "../modules/video_coding:webrtc_h264",
+      "../system_wrappers",
     ]
 
     libs = [
       "CoreFoundation.framework",
       "CoreMedia.framework",
       "CoreVideo.framework",
       "VideoToolbox.framework",
     ]
 
     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" ]
     }
 
     if (rtc_build_libyuv) {
       deps += [ "$rtc_libyuv_dir" ]
       public_deps = [
         "$rtc_libyuv_dir",
       ]
     } else {
       # Need to add a directory normally exported by libyuv.
       include_dirs = [ "$rtc_libyuv_dir/include" ]
     }
   }
 }