Replace the old URL format for PVer4 requests with the new format.

components/safe_browsing_db/v4_get_hash_protocol_manager.cc

Index: components/safe_browsing_db/v4_get_hash_protocol_manager.cc
diff --git a/components/safe_browsing_db/v4_get_hash_protocol_manager.cc b/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
index aebbfe9ba0dbce3750cd86e90c491715cd0b578e..d81565e6220af833a27232f8e9a5dc3c3c8bee78 100644
--- a/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
+++ b/components/safe_browsing_db/v4_get_hash_protocol_manager.cc
@@ -317,13 +317,15 @@ void V4GetHashProtocolManager::GetFullHashes(
     return;
   }
 
+  net::HttpRequestHeaders headers;
   std::string req_base64 = GetHashRequest(prefixes, platforms, threat_type);
-  GURL gethash_url = GetHashUrl(req_base64);
+  GURL gethash_url = GetHashUrlAndUpdateHeaders(req_base64, &headers);
 
   net::URLFetcher* fetcher =
       net::URLFetcher::Create(url_fetcher_id_++, gethash_url,
                               net::URLFetcher::GET, this)
           .release();
+  fetcher->SetExtraRequestHeaders(headers.ToString());
   hash_requests_[fetcher] = callback;
 
   fetcher->SetLoadFlags(net::LOAD_DISABLE_CACHE);
@@ -403,9 +405,11 @@ void V4GetHashProtocolManager::HandleGetHashError(const Time& now) {
   next_gethash_time_ = now + next;
 }
 
-GURL V4GetHashProtocolManager::GetHashUrl(const std::string& req_base64) const {
-  return V4ProtocolManagerUtil::GetRequestUrl(req_base64, "encodedFullHashes",
-                                              config_);
+GURL V4GetHashProtocolManager::GetHashUrlAndUpdateHeaders(

[Nathan Parker, 2016/06/09 20:22:18]

nit: What is the "update" mean here?  How about GetHashUrlAndHeaders? Same in
v4protocolmanagerutil.

[vakh (use Gerrit instead), 2016/06/09 21:02:15]

Done.

+    const std::string& req_base64,
+    net::HttpRequestHeaders* headers) const {
+  return V4ProtocolManagerUtil::GetRequestUrlAndUpdateHeaders(
+      req_base64, "fullHashes:find", config_, headers);
 }