Revert of Add ClientConfig proto, and JSON generation/parsing.

components/data_reduction_proxy/core/common/BUILD.gn

Index: components/data_reduction_proxy/core/common/BUILD.gn
diff --git a/components/data_reduction_proxy/core/common/BUILD.gn b/components/data_reduction_proxy/core/common/BUILD.gn
index 6976004e9091b52c9a6ef574cc6566e8a63aa71e..a28e6d0216be9dc1e4d08a087d8850978c86fe0b 100644
--- a/components/data_reduction_proxy/core/common/BUILD.gn
+++ b/components/data_reduction_proxy/core/common/BUILD.gn
@@ -7,8 +7,6 @@
 static_library("common") {
   sources = [
     "data_reduction_proxy_bypass_type_list.h",
-    "data_reduction_proxy_client_config_parser.cc",
-    "data_reduction_proxy_client_config_parser.h",
     "data_reduction_proxy_config_values.h",
     "data_reduction_proxy_event_store.cc",
     "data_reduction_proxy_event_store.h",
@@ -27,7 +25,6 @@
   ]
   deps = [
     "//base",
-    "//components/data_reduction_proxy/proto:data_reduction_proxy_proto",
     "//net",
     "//url",
   ]
@@ -57,7 +54,6 @@
 source_set("unit_tests") {
   testonly = true
   sources = [
-    "data_reduction_proxy_client_config_parser_unittest.cc",
     "data_reduction_proxy_event_store_unittest.cc",
     "data_reduction_proxy_headers_unittest.cc",
     "data_reduction_proxy_params_unittest.cc",
@@ -68,7 +64,6 @@
     ":test_support",
     "//base",
     "//base/test:test_support",
-    "//components/data_reduction_proxy/proto:data_reduction_proxy_proto",
     "//net:test_support",
     "//testing/gtest",
   ]