Remove dependency of SSLPlatformKeyTaskRunner on single-threaded SequencedWorkerPool.

net/ssl/ssl_platform_key_android.cc

 // Copyright 2015 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/ssl/ssl_platform_key.h"
 
 #include <openssl/digest.h>
 #include <openssl/evp.h>
 
 #include <utility>
@@ skipping 105 matching lines @@
       break;
     case EVP_PKEY_EC:
       type = SSLPrivateKey::Type::ECDSA;
       break;
     default:
       LOG(ERROR) << "Unknown key type: " << EVP_PKEY_id(key.get());
       return nullptr;
   }
   return make_scoped_refptr(new ThreadedSSLPrivateKey(
       base::WrapUnique(new SSLPlatformKeyAndroid(std::move(key), type)),
-      GetSSLPlatformKeyTaskRunner()));
+      SSLPlatformKeyTaskRunner::Get()));
 }
 
 }  // namespace
 
 scoped_refptr<SSLPrivateKey> FetchClientCertPrivateKey(
     X509Certificate* certificate) {
   crypto::ScopedEVP_PKEY key =
       OpenSSLClientKeyStore::GetInstance()->FetchClientCertPrivateKey(
           certificate);
   return WrapOpenSSLPrivateKey(std::move(key));
 }
 
 }  // namespace net