Re-enabling piece of WebRtcAudioDebugRecordingsBrowserTest.CallWithAudioDebugRecordings on Mac.

content/browser/webrtc/webrtc_audio_debug_recordings_browsertest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 
 #include "base/process/process_handle.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
@@ skipping 149 matching lines @@
   file_size = 0;
   EXPECT_TRUE(base::GetFileSize(file_path, &file_size));
   EXPECT_GT(file_size, kWaveHeaderSizeBytes);
   EXPECT_TRUE(base::DeleteFile(file_path, false));
 
   // Verify that the expected output audio files exists and contains some data.
   // Two files are expected, one for each peer in the call.
   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));
   }
 
   // Verify that no other files exist and remove temp dir.
   EXPECT_TRUE(base::IsDirectoryEmpty(temp_dir_path));
   EXPECT_TRUE(base::DeleteFile(temp_dir_path, false));
 
   base::ThreadRestrictions::SetIOAllowed(prev_io_allowed);
 }
 
@@ skipping 137 matching lines @@
   }
 
   // Verify that no other files exist and remove temp dir.
   EXPECT_TRUE(base::IsDirectoryEmpty(temp_dir_path));
   EXPECT_TRUE(base::DeleteFile(temp_dir_path, false));
 
   base::ThreadRestrictions::SetIOAllowed(prev_io_allowed);
 }
 
 }  // namespace content