Revert of [Cronet] Remove JSON serialization of CronetEngine.Builder

components/cronet/url_request_context_config_list.h

Index: components/cronet/url_request_context_config_list.h
diff --git a/components/cronet/url_request_context_config_list.h b/components/cronet/url_request_context_config_list.h
new file mode 100644
index 0000000000000000000000000000000000000000..53ded8b43ef0ccbce7b5e1deb0160d9a9ebf9dad
--- /dev/null
+++ b/components/cronet/url_request_context_config_list.h
@@ -0,0 +1,56 @@
+// Copyright 2014 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.
+
+// This file intentionally does not have header guards, it's included
+// inside a macro to generate enum values.
+#ifndef DEFINE_CONTEXT_CONFIG
+#error "DEFINE_CONTEXT_CONFIG should be defined before including this file"
+#endif
+// See CronetEngine.Builder class in CronetEngine.java for description of these
+// parameters.
+DEFINE_CONTEXT_CONFIG(USER_AGENT)
+DEFINE_CONTEXT_CONFIG(STORAGE_PATH)
+DEFINE_CONTEXT_CONFIG(ENABLE_LEGACY_MODE)
+DEFINE_CONTEXT_CONFIG(NATIVE_LIBRARY_NAME)
+DEFINE_CONTEXT_CONFIG(ENABLE_QUIC)
+DEFINE_CONTEXT_CONFIG(ENABLE_SPDY)
+DEFINE_CONTEXT_CONFIG(ENABLE_SDCH)
+DEFINE_CONTEXT_CONFIG(DATA_REDUCTION_PROXY_KEY)
+DEFINE_CONTEXT_CONFIG(DATA_REDUCTION_PRIMARY_PROXY)
+DEFINE_CONTEXT_CONFIG(DATA_REDUCTION_FALLBACK_PROXY)
+DEFINE_CONTEXT_CONFIG(DATA_REDUCTION_SECURE_PROXY_CHECK_URL)
+DEFINE_CONTEXT_CONFIG(HTTP_CACHE)
+DEFINE_CONTEXT_CONFIG(HTTP_CACHE_MAX_SIZE)
+
+DEFINE_CONTEXT_CONFIG(HTTP_CACHE_DISABLED)
+DEFINE_CONTEXT_CONFIG(HTTP_CACHE_DISK)
+DEFINE_CONTEXT_CONFIG(HTTP_CACHE_MEMORY)
+DEFINE_CONTEXT_CONFIG(LOAD_DISABLE_CACHE)
+
+DEFINE_CONTEXT_CONFIG(QUIC_HINTS)
+DEFINE_CONTEXT_CONFIG(QUIC_HINT_HOST)
+DEFINE_CONTEXT_CONFIG(QUIC_HINT_PORT)
+DEFINE_CONTEXT_CONFIG(QUIC_HINT_ALT_PORT)
+
+DEFINE_CONTEXT_CONFIG(EXPERIMENTAL_OPTIONS)
+
+// The list of PKP info for multiple hosts. Each member of the list pins a
+// single host and contains the following nested JSON elements: PKP_HOST,
+// PKP_PIN_HASHES, PKP_INCLUDE_SUBDOMAINS and PKP_EXPIRATION_DATE.
+DEFINE_CONTEXT_CONFIG(PKP_LIST)
+// Name of the host to which public keys should be pinned. See PKP_LIST.
+DEFINE_CONTEXT_CONFIG(PKP_HOST)
+// The list of PKP pins. Each pin is BASE64 encoded SHA-256 cryptographic
+// hash of DER-encoded ASN.1 representation of Subject Public Key Info (SPKI)
+// of the host X.509 certificate. The pins are prepended with "sha256/" prefix.
+// See PKP_LIST.
+DEFINE_CONTEXT_CONFIG(PKP_PIN_HASHES)
+// Indicates whether the pinning policy should be applied to subdomains of
+// PKP_HOST. See PKP_LIST.
+DEFINE_CONTEXT_CONFIG(PKP_INCLUDE_SUBDOMAINS)
+// Specifies the expiration date for the pins. See PKP_LIST.
+DEFINE_CONTEXT_CONFIG(PKP_EXPIRATION_DATE)
+
+// For Testing.
+DEFINE_CONTEXT_CONFIG(MOCK_CERT_VERIFIER)