| Index: media/base/key_systems.cc
 | 
| diff --git a/media/base/key_systems.cc b/media/base/key_systems.cc
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| index 1cd202ca425acf86367cb097e850ac16d3e7ec22..6b4d0c3c16fbe3b98e10ea20f4c9e541b2629c3b 100644
 | 
| --- a/media/base/key_systems.cc
 | 
| +++ b/media/base/key_systems.cc
 | 
| @@ -674,12 +674,12 @@ EmeConfigRule KeySystemsImpl::GetContentTypeConfigRule(
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|    SupportedCodecs media_type_codec_mask = EME_CODEC_NONE;
 | 
|    switch (media_type) {
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|      case EmeMediaType::AUDIO:
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| -      if (!StartsWithASCII(container_mime_type, "audio/", true))
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| +      if (!base::StartsWithASCII(container_mime_type, "audio/", true))
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|          return EmeConfigRule::NOT_SUPPORTED;
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|        media_type_codec_mask = audio_codec_mask_;
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|        break;
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|      case EmeMediaType::VIDEO:
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| -      if (!StartsWithASCII(container_mime_type, "video/", true))
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| +      if (!base::StartsWithASCII(container_mime_type, "video/", true))
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|          return EmeConfigRule::NOT_SUPPORTED;
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|        media_type_codec_mask = video_codec_mask_;
 | 
|        break;
 | 
| 
 |