Return chrome-proxy-ect header code (post M59 branch)

components/data_reduction_proxy/core/common/data_reduction_proxy_headers.cc

 // 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.
 
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_headers.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 11 matching lines @@
 #include "net/http/http_status_code.h"
 #include "net/http/http_util.h"
 #include "net/url_request/url_request.h"
 
 using base::StringPiece;
 using base::TimeDelta;
 
 namespace {
 
 const char kChromeProxyHeader[] = "chrome-proxy";
+const char kChromeProxyECTHeader[] = "chrome-proxy-ect";
 const char kChromeProxyAcceptTransformHeader[] =
     "chrome-proxy-accept-transform";
 const char kChromeProxyContentTransformHeader[] =
     "chrome-proxy-content-transform";
 
 const char kActionValueDelimiter = '=';
 
 // Previews directives.
 const char kEmptyImageDirective[] = "empty-image";
 const char kLitePageDirective[] = "lite-page";
@@ skipping 77 matching lines @@
 }
 
 }  // namespace
 
 namespace data_reduction_proxy {
 
 const char* chrome_proxy_header() {
   return kChromeProxyHeader;
 }
 
+const char* chrome_proxy_ect_header() {
+  return kChromeProxyECTHeader;
+}
+
 const char* chrome_proxy_accept_transform_header() {
   return kChromeProxyAcceptTransformHeader;
 }
 
 const char* chrome_proxy_content_transform_header() {
   return kChromeProxyContentTransformHeader;
 }
 
 const char* empty_image_directive() {
   return kEmptyImageDirective;
@@ skipping 285 matching lines @@
   std::string value;
   size_t iter = 0;
   while (headers->EnumerateHeader(&iter, kChromeProxyHeader, &value)) {
     if (StartsWithActionPrefix(value, kChromeProxyActionFingerprintChromeProxy))
       continue;
     values->push_back(std::move(value));
   }
 }
 
 }  // namespace data_reduction_proxy