Fix a bunch of clang warnings/errors.

net/http/http_auth_gssapi_posix.cc

 // Copyright (c) 2010 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 "net/http/http_auth_gssapi_posix.h"
 
 #include <limits>
 #include <string>
 
 #include "base/base64.h"
@@ skipping 281 matching lines @@
   output += AppendIfPredefinedValue(oid,
                                     GSS_C_NT_ANONYMOUS,
                                     "GSS_C_NT_ANONYMOUS");
   output += AppendIfPredefinedValue(oid,
                                     GSS_C_NT_EXPORT_NAME,
                                     "GSS_C_NT_EXPORT_NAME");
 
   return output;
 }
 
-std::string DescribeBuffer(const gss_buffer_t buffer) {
-  if (!buffer)
-    return "<NULL>";
-  size_t length = buffer->length;
-  std::string output(StringPrintf("(%" PRIuS ") ", length));
-  if (!buffer->value) {
-    output += "<NULL>";
-    return output;
-  }
-  const char* value =
-      reinterpret_cast<const char*>(buffer->value);
-  bool is_printable = true;
-  for (size_t i = 0; i < length; ++i) {
-    if (!isprint(value[i])) {
-      // Allow the last character to be a '0'.
-      if ((i < (length - 1)) && !value[i])
-        continue;
-      is_printable = false;
-      break;
-    }
-  }
-  if (is_printable) {
-    output += "\"";
-    output += value;
-    output += "\"";
-  } else {
-    output += "[";
-    for (size_t i = 0; i < buffer->length; ++i) {
-      output += StringPrintf("\\x%02X", value[i] & 0x0FF);
-    }
-    output += "]";
-  }
-
-  return output;
-}
-
 std::string DescribeName(GSSAPILibrary* gssapi_lib, const gss_name_t name) {
   OM_uint32 major_status = 0;
   OM_uint32 minor_status = 0;
   gss_buffer_desc_struct output_name_buffer = GSS_C_EMPTY_BUFFER;
   gss_OID_desc output_name_type_desc = GSS_C_EMPTY_BUFFER;
   gss_OID output_name_type = &output_name_type_desc;
   major_status = gssapi_lib->display_name(&minor_status,
                                           name,
                                           &output_name_buffer,
                                           &output_name_type);
@@ skipping 563 matching lines @@
                                         minor_status)
                << std::endl
                << DescribeContext(library_, scoped_sec_context_.get());
     return rv;
   }
 
   return OK;
 }
 
 }  // namespace net