HRTF panner should handle the case of no loaded HRTF database
Currently, the panner node checks to see if the HRTF database is
loaded and does the copy of the input if necessary. This is the wrong
abstraction; the HRTF panner should copy the input if the database is
not ready.
In this way, the panner doesn't need to know about this implementation
detail, and we also get the correct distance and cone gains applied.
BUG=629858
TEST=
Review-Url: https://codereview.chromium.org/2170973002
Cr-Commit-Position: refs/heads/master@{#406988}
6 files changed
