CCodecBufferChannel: remove assumption that pipeline clears quickly on input EOS

}

PipelineWatcher::Clock::duration CCodecBufferChannel::elapsed() {

    // When client pushed EOS, we want all the work to be done quickly.

    // Otherwise, component may have stalled work due to input starvation up to

    // the sum of the delay in the pipeline.

    // TODO(b/231253301): When client pushed EOS, the pipeline could have less

    //                    number of frames.

    size_t n = 0;

    if (!mInputMetEos) {

    size_t outputDelay = mOutput.lock()->outputDelay;

    {

        Mutexed<Input>::Locked input(mInput);

        n = input->inputDelay + input->pipelineDelay + outputDelay;

    }