Enable support for Rice encoding

components/safe_browsing_db/v4_update_protocol_manager.cc

 // Copyright 2016 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/safe_browsing_db/v4_update_protocol_manager.h"
 
 #include <utility>
 
 #include "base/base64url.h"
 #include "base/macros.h"
@@ skipping 194 matching lines @@
     ListUpdateRequest* list_update_request = request.add_list_update_requests();
     list_update_request->set_platform_type(list_to_update.platform_type);
     list_update_request->set_threat_entry_type(
         list_to_update.threat_entry_type);
     list_update_request->set_threat_type(list_to_update.threat_type);
 
     if (!state.empty()) {
       list_update_request->set_state(state);
     }
 
     // TODO(vakh): Accept other compression formats also.

[Nathan Parker, 2016/08/19 00:18:22]

remove todo

[vakh (use Gerrit instead), 2016/08/19 00:46:35]

Done.

     // See: https://bugs.chromium.org/p/chromium/issues/detail?id=624567
     list_update_request->mutable_constraints()->add_supported_compressions(RAW);
+    list_update_request->mutable_constraints()->add_supported_compressions(

[Nathan Parker, 2016/08/19 00:18:22]

Are there any tests that is affects or should affect?  We might want to verify
we're requesting the expected list of threat types, among others.

[vakh (use Gerrit instead), 2016/08/19 00:46:35]

Good catch. Done.

+        RICE);
   }
 
   // Serialize and Base64 encode.
   std::string req_data, req_base64;
   request.SerializeToString(&req_data);
   base::Base64UrlEncode(req_data, base::Base64UrlEncodePolicy::INCLUDE_PADDING,
                         &req_base64);
   return req_base64;
 }
 
@@ skipping 121 matching lines @@
 
 void V4UpdateProtocolManager::GetUpdateUrlAndHeaders(
     const std::string& req_base64,
     GURL* gurl,
     net::HttpRequestHeaders* headers) const {
   V4ProtocolManagerUtil::GetRequestUrlAndHeaders(
       req_base64, "threatListUpdates:fetch", config_, gurl, headers);
 }
 
 }  // namespace safe_browsing