Revert "Port frame_analyzer and rgba_to_i420_converter targets to GN build."

This reverts commit 6ac53b2b37c36d4e09f4252c91cada0462adf741.

Reason: breaks compile on Win GN:
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Win%20GN/builds/131

TBR=tfarina@chromium.org

Review URL: https://webrtc-codereview.appspot.com/45919004

Cr-Commit-Position: refs/heads/master@{#8915}
4 files changed