Add Mac-specific resource to modules_unittests.isolate

This should make
http://build.chromium.org/p/client.webrtc.fyi/builders/Mac64%20Release%20%28swarming%29
go green.

BUG=chromium:497757
TBR=stip@chromium.org

Review URL: https://codereview.webrtc.org/1415093005 .

Cr-Commit-Position: refs/heads/master@{#10367}
diff --git a/webrtc/modules/modules_unittests.isolate b/webrtc/modules/modules_unittests.isolate
index 5035f6e..ba444df 100644
--- a/webrtc/modules/modules_unittests.isolate
+++ b/webrtc/modules/modules_unittests.isolate
@@ -18,6 +18,7 @@
       'variables': {
         'files': [
           '<(DEPTH)/data/audio_processing/output_data_float.pb',
+          '<(DEPTH)/data/audio_processing/output_data_mac.pb',
           '<(DEPTH)/data/voice_engine/audio_tiny48.wav',
           '<(DEPTH)/resources/att-downlink.rx',
           '<(DEPTH)/resources/att-uplink.rx',