predictors: Pass manifests from Bork to store in ResourcePrefetchPredictor.

components/precache/content/precache_manager.cc

Index: components/precache/content/precache_manager.cc
diff --git a/components/precache/content/precache_manager.cc b/components/precache/content/precache_manager.cc
index c28cb53aafe3cfa8aa7baa81aa3f74de94627fe6..e758a4bbbcc88dc3f75b82ef72c3f5446cca1eac 100644
--- a/components/precache/content/precache_manager.cc
+++ b/components/precache/content/precache_manager.cc
@@ -21,6 +21,7 @@
 #include "components/history/core/browser/history_service.h"
 #include "components/precache/core/precache_database.h"
 #include "components/precache/core/precache_switches.h"
+#include "components/precache/core/proto/precache.pb.h"
 #include "components/precache/core/proto/unfinished_work.pb.h"
 #include "components/prefs/pref_service.h"
 #include "components/sync/driver/sync_service.h"
@@ -62,12 +63,14 @@ PrecacheManager::PrecacheManager(
     const history::HistoryService* const history_service,
     const data_reduction_proxy::DataReductionProxySettings*
         data_reduction_proxy_settings,
+    Delegate* delegate,
     const base::FilePath& db_path,
     std::unique_ptr<PrecacheDatabase> precache_database)
     : browser_context_(browser_context),
       sync_service_(sync_service),
       history_service_(history_service),
       data_reduction_proxy_settings_(data_reduction_proxy_settings),
+      delegate_(delegate),
       is_precaching_(false) {
   precache_database_ = std::move(precache_database);
   BrowserThread::PostTask(
@@ -456,6 +459,13 @@ void PrecacheManager::OnDone() {
   is_precaching_ = false;
 }
 
+void PrecacheManager::OnManifestFetched(const std::string& host,
+                                        const PrecacheManifest& manifest) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  if (delegate_)
+    delegate_->OnManifestFetched(host, manifest);
+}
+
 void PrecacheManager::OnHostsReceived(
     const history::TopHostsList& host_counts) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);