am 0512881b: am 9aff25fb: stagefright: httplive: Reduce memcpy calls for chunked content

        // Only resize when we don't know the size.

        size_t bufferRemaining = buffer->capacity() - buffer->size();

        if (bufferRemaining == 0 && getSizeErr != OK) {

            bufferRemaining = 32768;

            size_t bufferIncrement = buffer->size() / 2;

            if (bufferIncrement < 32768) {

                bufferIncrement = 32768;

            }

            bufferRemaining = bufferIncrement;

            ALOGV("increasing download buffer to %zu bytes",

                 buffer->size() + bufferRemaining);