Re-enabling piece of WebRtcAudioDebugRecordingsBrowserTest.CallWithAudioDebugRecordings on Mac.

content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc

Index: content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc
diff --git a/content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc b/content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc
index 1b7f9478111aec1dcf72b4deaeac554b754055f7..4129ac8e7d49a3d95330a3ed1a097668eb73643b 100644
--- a/content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc
+++ b/content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc
@@ -167,13 +167,10 @@ IN_PROC_BROWSER_TEST_F(WebRtcAudioDebugRecordingsBrowserTest,
   for (int i = 0; i < 2; ++i) {
     file_path = GetExpectedOutputAudioFileName(
         base_file_path, kExpectedFirstOutputStreamId + i);
-// Flaky on Mac. http://crbug.com/700859.
-#if !defined(OS_MACOSX)
     EXPECT_TRUE(base::PathExists(file_path));
     file_size = 0;
     EXPECT_TRUE(base::GetFileSize(file_path, &file_size));
     EXPECT_GT(file_size, kWaveHeaderSizeBytes);
-#endif
     EXPECT_TRUE(base::DeleteFile(file_path, false));
   }