| Index: chrome/browser/media_galleries/fileapi/media_file_system_backend.cc
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| diff --git a/chrome/browser/media_galleries/fileapi/media_file_system_backend.cc b/chrome/browser/media_galleries/fileapi/media_file_system_backend.cc
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| index b7f629c0f13f881ac3e50ca30066c8ecea5fd9eb..5c65f96f720485d93287faa446771b4a9fd67c1d 100644
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| --- a/chrome/browser/media_galleries/fileapi/media_file_system_backend.cc
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| +++ b/chrome/browser/media_galleries/fileapi/media_file_system_backend.cc
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| @@ -91,9 +91,8 @@ void AttemptAutoMountOnUIThread(
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|          MediaFileSystemBackend::ConstructMountName(
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|              profile->GetPath(), storage_domain, kInvalidMediaGalleryPrefId);
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|      MediaGalleryPrefId pref_id = kInvalidMediaGalleryPrefId;
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| -    if (extension &&
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| -        extension->id() == storage_domain &&
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| -        StartsWithASCII(mount_point, expected_mount_prefix, true) &&
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| +    if (extension && extension->id() == storage_domain &&
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| +        base::StartsWithASCII(mount_point, expected_mount_prefix, true) &&
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|          base::StringToUint64(mount_point.substr(expected_mount_prefix.size()),
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|                               &pref_id) &&
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|          pref_id != kInvalidMediaGalleryPrefId) {
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| @@ -197,7 +196,7 @@ bool MediaFileSystemBackend::AttemptAutoMountForURLRequest(
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|    if (components.empty())
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|      return false;
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|    std::string mount_point = base::FilePath(components[0]).AsUTF8Unsafe();
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| -  if (!StartsWithASCII(mount_point, kMediaGalleryMountPrefix, true))
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| +  if (!base::StartsWithASCII(mount_point, kMediaGalleryMountPrefix, true))
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|      return false;
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|  
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|    const content::ResourceRequestInfo* request_info =
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| 
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