Bypass browser join confirmation in prebuilt AppRTC

This is still needed by Chromium tests.
Copied from https://webrtc.googlesource.com/webrtc.DEPS/+/76533443ed95184aa45dc3b4af383fc301a53f80/copy_apprtc.py

Bug: webrtc:7602
Change-Id: I17f0159fe43176df95ad2e27ff330650d6645d67
No-Try: True
Reviewed-on: https://webrtc-review.googlesource.com/66680
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22718}
diff --git a/rtc_tools/testing/setup_apprtc.py b/rtc_tools/testing/setup_apprtc.py
index 3f5a166..2b463e0 100755
--- a/rtc_tools/testing/setup_apprtc.py
+++ b/rtc_tools/testing/setup_apprtc.py
@@ -34,11 +34,11 @@
                                 output_dir])
 
   build_apprtc_path = os.path.join(SCRIPT_DIR, 'build_apprtc.py')
-  apprtc_src_dir = os.path.join(output_dir, 'apprtc', 'src')
+  apprtc_dir = os.path.join(output_dir, 'apprtc')
   go_dir = os.path.join(output_dir, 'go')
   collider_dir = os.path.join(output_dir, 'collider')
   utils.RunSubprocessWithRetry([sys.executable, build_apprtc_path,
-                                apprtc_src_dir, go_dir, collider_dir])
+                                apprtc_dir, go_dir, collider_dir])
 
 
 if __name__ == '__main__':