base: Remove the string logging from CHECK().

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 549 matching lines @@
     const std::string& filename,
     bool raw_h264,
     const base::Closure& eos_cb) {
   CHECK(backend);
 
   VideoConfig video_config;
   BufferList buffers;
   if (raw_h264) {
     base::FilePath file_path = GetTestDataFilePath(filename);
     base::MemoryMappedFile video_stream;
-    CHECK(video_stream.Initialize(file_path)) << "Couldn't open stream file: "
-                                              << file_path.MaybeAsASCII();
+    // Couldn't open stream file.
+    CHECK(video_stream.Initialize(file_path));
     buffers = H264SegmenterForTest(video_stream.data(), video_stream.length());
 
     // TODO(erickung): Either pull data from stream or make caller specify value
     video_config.codec = kCodecH264;
     video_config.profile = kH264Main;
     video_config.additional_config = nullptr;
     video_config.encryption_scheme = Unencrypted();
   } else {
     base::FilePath file_path = GetTestDataFilePath(filename);
     DemuxResult demux_result = FFmpegDemuxForTest(file_path, false /* audio */);
@@ skipping 594 matching lines @@
   set_sync_type(MediaPipelineDeviceParams::kModeSyncPts);
   ConfigureForFile("bear-640x360.webm");
   PauseBeforeEos();
   AddEffectsStreams();
   Start();
   base::RunLoop().Run();
 }
 
 }  // namespace media
 }  // namespace chromecast