diff --git a/webrtc/call/BUILD.gn b/webrtc/call/BUILD.gn
index 62b8ac465f..813f92b4ab 100644
--- a/webrtc/call/BUILD.gn
+++ b/webrtc/call/BUILD.gn
@@ -158,6 +158,7 @@ if (rtc_include_tests) {
       "../modules/pacing",
       "../modules/rtp_rtcp",
       "../modules/rtp_rtcp:mock_rtp_rtcp",
+      "../modules/utility:mock_process_thread",
       "../rtc_base:rtc_base_approved",
       "../system_wrappers",
       "../test:audio_codec_mocks",
diff --git a/webrtc/modules/utility/BUILD.gn b/webrtc/modules/utility/BUILD.gn
index b40cbd5055..29ff042954 100644
--- a/webrtc/modules/utility/BUILD.gn
+++ b/webrtc/modules/utility/BUILD.gn
@@ -40,6 +40,18 @@ rtc_static_library("utility") {
   ]
 }
 
+rtc_source_set("mock_process_thread") {
+  testonly = true
+  sources = [
+    "include/mock/mock_process_thread.h",
+  ]
+  deps = [
+    ":utility",
+    "../../rtc_base:rtc_base_approved",
+    "../../test:test_support",
+  ]
+}
+
 if (rtc_include_tests) {
   rtc_source_set("utility_unittests") {
     testonly = true
diff --git a/webrtc/video/BUILD.gn b/webrtc/video/BUILD.gn
index f9c3453d59..f85510cd9c 100644
--- a/webrtc/video/BUILD.gn
+++ b/webrtc/video/BUILD.gn
@@ -277,6 +277,7 @@ if (rtc_include_tests) {
       "../modules/rtp_rtcp",
       "../modules/rtp_rtcp:mock_rtp_rtcp",
       "../modules/utility",
+      "../modules/utility:mock_process_thread",
       "../modules/video_coding",
       "../modules/video_coding:video_coding_utility",
       "../modules/video_coding:webrtc_h264",