[Chromecast] Fix AudioVideoPipelineDeviceTest failures

chromecast/media/cma/backend/audio_video_pipeline_device_unittest.cc

 // Copyright 2014 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 <limits>
 #include <memory>
 #include <vector>
 
@@ skipping 377 matching lines @@
 }
 
 void BufferFeeder::OnPushBufferComplete(BufferStatus status) {
   DCHECK(thread_checker_.CalledOnValidThread());
   pending_buffer_ = nullptr;
   EXPECT_FALSE(within_push_buffer_call_)
       << "OnPushBufferComplete() called during a call to PushBuffer()";
   EXPECT_TRUE(expecting_buffer_complete_)
       << "OnPushBufferComplete() called unexpectedly";
   expecting_buffer_complete_ = false;
-  ASSERT_NE(status, MediaPipelineBackend::kBufferFailed);
+  if (!feed_continuous_pcm_ || !feeding_completed_) {
+    ASSERT_NE(status, MediaPipelineBackend::kBufferFailed);
+  }
   EXPECT_FALSE(eos_) << "Got OnPushBufferComplete() after OnEndOfStream()";
 
   if (test_config_after_next_push_) {
     test_config_after_next_push_ = false;
     TestConfigs();
   }
 
   if (feeding_completed_)
     return;
 
@@ skipping 767 matching lines @@
   set_sync_type(MediaPipelineDeviceParams::kModeSyncPts);
   ConfigureForFile("bear-640x360.webm");
   PauseBeforeEos();
   AddEffectsStreams();
   Start();
   base::RunLoop().Run();
 }
 
 }  // namespace media
 }  // namespace chromecast