Revert "Compile frame_analyzer instead of using a prebuilt version."

This reverts commit abac56b866efbfbdfef50e7a892e8c1c91ad5fbc.

Reason for revert: Breaks perf tests.

Original change's description:
> Compile frame_analyzer instead of using a prebuilt version.
> 
> Bug: webrtc:9665
> Change-Id: I589128d3f18a68a42094dacd910cd614a075a460
> Reviewed-on: https://webrtc-review.googlesource.com/99823
> Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
> Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#24717}

TBR=phoglund@webrtc.org,mbonadei@webrtc.org,magjed@webrtc.org,oprypin@webrtc.org,kthelgason@webrtc.org

Change-Id: Ic0aab0a7aea18efbe802b9fca51a2b95533237c3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:9665
Reviewed-on: https://webrtc-review.googlesource.com/100105
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24721}
diff --git a/examples/androidtests/video_quality_loopback_test.py b/examples/androidtests/video_quality_loopback_test.py
index 9a4c386..225f885 100755
--- a/examples/androidtests/video_quality_loopback_test.py
+++ b/examples/androidtests/video_quality_loopback_test.py
@@ -192,7 +192,7 @@
 
   # Run comparison script.
   compare_script = os.path.join(SRC_DIR, 'rtc_tools', 'compare_videos.py')
-  frame_analyzer = os.path.join(build_dir, 'frame_analyzer')
+  frame_analyzer = os.path.join(TOOLCHAIN_DIR, 'frame_analyzer')
   zxing_path = os.path.join(TOOLCHAIN_DIR, 'zxing')
   stats_file_ref = os.path.join(temp_dir, 'stats_ref.txt')
   stats_file_test = os.path.join(temp_dir, 'stats_test.txt')
@@ -241,3 +241,4 @@
 
 if __name__ == '__main__':
   sys.exit(main())
+