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

components/certificate_transparency/log_dns_client.cc

Index: components/certificate_transparency/log_dns_client.cc
diff --git a/components/certificate_transparency/log_dns_client.cc b/components/certificate_transparency/log_dns_client.cc
index fabbbac4698c36a0e36c9d5690f38ab9aa85587a..9ddba5471433681b78b7189ccde9a7677cb97d36 100644
--- a/components/certificate_transparency/log_dns_client.cc
+++ b/components/certificate_transparency/log_dns_client.cc
@@ -4,6 +4,7 @@
 
 #include "components/certificate_transparency/log_dns_client.h"
 
+#include "base/base32.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/format_macros.h"
@@ -15,7 +16,6 @@
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
-#include "components/base32/base32.h"
 #include "crypto/sha2.h"
 #include "net/cert/merkle_audit_proof.h"
 #include "net/dns/dns_client.h"
@@ -275,8 +275,8 @@ void LogDnsClient::AuditProofQuery::OnDnsTransactionComplete(
 }
 
 net::Error LogDnsClient::AuditProofQuery::RequestLeafIndex() {
-  std::string encoded_leaf_hash = base32::Base32Encode(
-      leaf_hash_, base32::Base32EncodePolicy::OMIT_PADDING);
+  std::string encoded_leaf_hash =
+      base::Base32Encode(leaf_hash_, base::Base32EncodePolicy::OMIT_PADDING);
   DCHECK_EQ(encoded_leaf_hash.size(), 52u);
 
   std::string qname = base::StringPrintf(