Fix missing resource file in webrtc_perf_tests.isolate

In https://codereview.webrtc.org/2074043002/ the Chromium test framework
for Android started cleaning up resources between runs to prevent old
resources file polluting test runs. This surfaced that one file was missing
in the webrtc_perf_tests.isolate list.

TBR=henrik.lundin@webrtc.org
NOTRY=True

Review-Url: https://codereview.webrtc.org/2077823002
Cr-Commit-Position: refs/heads/master@{#13180}
diff --git a/webrtc/webrtc_perf_tests.isolate b/webrtc/webrtc_perf_tests.isolate
index d29aebb..b66054c 100644
--- a/webrtc/webrtc_perf_tests.isolate
+++ b/webrtc/webrtc_perf_tests.isolate
@@ -11,6 +11,7 @@
       'variables': {
         'files': [
           '<(DEPTH)/resources/audio_coding/speech_mono_16kHz.pcm',
+          '<(DEPTH)/resources/audio_coding/testfile32kHz.pcm',
           '<(DEPTH)/resources/foreman_cif.yuv',
           '<(DEPTH)/resources/paris_qcif.yuv',
           '<(DEPTH)/resources/voice_engine/audio_long16.pcm',