Move base32 into base so that it can be used within base.

base/base32.cc

 // Copyright 2016 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 "components/base32/base32.h"
+#include "base/base32.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <limits>
 
 #include "base/logging.h"
 
-namespace base32 {
+namespace base {
 
 namespace {
 constexpr char kEncoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
 }  // namespace
 
-std::string Base32Encode(base::StringPiece input, Base32EncodePolicy policy) {
+std::string Base32Encode(StringPiece input, Base32EncodePolicy policy) {
   if (input.empty())
     return std::string();
 
   if (input.size() > std::numeric_limits<size_t>::max() / 8) {
     NOTREACHED()
         << "Input is too large and would overflow encoded size computation.";
     return std::string();
   }
 
   // Per RFC4648, the output is formed of 8 characters per 40 bits of input and
@@ skipping 35 matching lines @@
   }
 
   if (policy == Base32EncodePolicy::INCLUDE_PADDING) {
     output.append(padded_length - unpadded_length, '=');
   }
 
   DCHECK_EQ(encoded_length, output.size());
   return output;
 }
 
-}  // namespace base32
+}  // namespace base