Revert of Update SplitString calls to new form

media/base/mime_util_unittest.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 "base/basictypes.h"
 #include "base/strings/string_split.h"
 #include "build/build_config.h"
 #include "media/base/mime_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 102 matching lines @@
   } tests[] = {
     { "\"bogus\"",                  1, { "bogus" }            },
     { "0",                          1, { "0" }                },
     { "avc1.42E01E, mp4a.40.2",     2, { "avc1",   "mp4a" }   },
     { "\"mp4v.20.240, mp4a.40.2\"", 2, { "mp4v",   "mp4a" }   },
     { "mp4v.20.8, samr",            2, { "mp4v",   "samr" }   },
     { "\"theora, vorbis\"",         2, { "theora", "vorbis" } },
     { "",                           0, { }                    },
     { "\"\"",                       0, { }                    },
     { "\"   \"",                    0, { }                    },
-    { ",",                          0, { }                    },
+    { ",",                          2, { "", "" }             },
   };
 
   for (size_t i = 0; i < arraysize(tests); ++i) {
     std::vector<std::string> codecs_out;
     ParseCodecString(tests[i].original, &codecs_out, true);
     ASSERT_EQ(tests[i].expected_size, codecs_out.size());
     for (size_t j = 0; j < tests[i].expected_size; ++j)
       EXPECT_EQ(tests[i].results[j], codecs_out[j]);
   }
 
   // Test without stripping the codec type.
   std::vector<std::string> codecs_out;
   ParseCodecString("avc1.42E01E, mp4a.40.2", &codecs_out, false);
   ASSERT_EQ(2u, codecs_out.size());
   EXPECT_EQ("avc1.42E01E", codecs_out[0]);
   EXPECT_EQ("mp4a.40.2", codecs_out[1]);
 }
 
 }  // namespace media