Add ffmpeg regression test for flac file hang found by clusterfuzz.

media/ffmpeg/ffmpeg_regression_tests.cc

 // Copyright (c) 2012 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.
 //
 // Regression tests for FFmpeg.  Test files can be found in the internal media
 // test data directory:
 //
 //    https://chrome-internal.googlesource.com/chrome/data/media
 //
 // Simply add the custom_dep below to your gclient and sync:
@@ skipping 149 matching lines @@
 // TODO(tguilbert): update PIPELINE_ERROR_DECODE to
 // AUDIO_RENDERER_ERROR_IMPLICIT_CONFIG_CHANGE once the status is created.
 FFMPEG_TEST_CASE(Cr599625,
                  "security/599625.mp4",
                  PIPELINE_OK,
                  PIPELINE_ERROR_DECODE);
 // TODO(liberato): before crbug.com/658440 was fixed, this would fail if run
 // twice under ASAN.  If run once, then it doesn't.  However, it still catches
 // issues in crbug.com/662118, so it's included anyway.
 FFMPEG_TEST_CASE(Cr658440, "security/658440.flac", PIPELINE_OK, PIPELINE_OK);
+FFMPEG_TEST_CASE(Cr665305,
+                 "crbug665305.flac",
+                 PIPELINE_OK,
+                 PIPELINE_ERROR_DECODE);
 
 // General MP4 test cases.
 FFMPEG_TEST_CASE(MP4_0,
                  "security/aac.10419.mp4",
                  DEMUXER_ERROR_COULD_NOT_OPEN,
                  DEMUXER_ERROR_COULD_NOT_OPEN);
 FFMPEG_TEST_CASE(MP4_1,
                  "security/clockh264aac_200021889.mp4",
                  DEMUXER_ERROR_COULD_NOT_OPEN,
                  DEMUXER_ERROR_COULD_NOT_OPEN);
@@ skipping 188 matching lines @@
 }
 
 TEST_P(FlakyFFmpegRegressionTest, BasicPlayback) {
   if (Start(GetParam().filename, kClockless) == PIPELINE_OK) {
     Play();
     WaitUntilEndedOrError();
   }
 }
 
 }  // namespace media