Cleanup unreachable cert adding code

net/base/mime_util.h

Index: net/base/mime_util.h
diff --git a/net/base/mime_util.h b/net/base/mime_util.h
index 48b9a648af696a9307f6f85b1fe427dc92eecae9..3123a087092e58ded2b2a6caddeb6871e767072a 100644
--- a/net/base/mime_util.h
+++ b/net/base/mime_util.h
@@ -89,17 +89,6 @@ NET_EXPORT void GetExtensionsForMimeType(
     const std::string& mime_type,
     std::vector<base::FilePath::StringType>* extensions);
 
-// A list of supported certificate-related mime types.
-//
-// A Java counterpart will be generated for this enum.
-// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.net
-enum CertificateMimeType {
-  CERTIFICATE_MIME_TYPE_UNKNOWN,
-  CERTIFICATE_MIME_TYPE_X509_USER_CERT,
-  CERTIFICATE_MIME_TYPE_X509_CA_CERT,
-  CERTIFICATE_MIME_TYPE_PKCS12_ARCHIVE,
-};
-
 // Generates a random MIME multipart boundary.
 // The returned string is guaranteed to be at most 70 characters long.
 NET_EXPORT std::string GenerateMimeMultipartBoundary();