[Chromecast] Remove weak symbols in external_audio_pipeline_shlib.h.

Bug: internal b/127656475

Change-Id: Ib7681e6de5693ab25c5df96274b691b2ad0aa9a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1530838
Reviewed-by: Kenneth MacKay <kmackay@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Steven Zhu <jz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642392}
1 file changed