predictors: Pass manifests from Bork to store in ResourcePrefetchPredictor.

components/precache/content/precache_manager.h

Index: components/precache/content/precache_manager.h
diff --git a/components/precache/content/precache_manager.h b/components/precache/content/precache_manager.h
index afd5e6c6e737de5006cfab24431c96ad684654da..8ae2f185c1ed51133a483c8654a9a8a4d4ed99f0 100644
--- a/components/precache/content/precache_manager.h
+++ b/components/precache/content/precache_manager.h
@@ -55,6 +55,8 @@ namespace precache {
 
 class PrecacheDatabase;
 class PrecacheUnfinishedWork;
+class PrecacheManifest;
+class PrecacheManifestDelegate;
 
 extern const char kPrecacheFieldTrialName[];
 
@@ -80,6 +82,7 @@ class PrecacheManager : public KeyedService,
                   const history::HistoryService* history_service,
                   const data_reduction_proxy::DataReductionProxySettings*
                       data_reduction_proxy_settings,
+                  PrecacheManifestDelegate* precache_manifest_delegate,
                   const base::FilePath& db_path,
                   std::unique_ptr<PrecacheDatabase> precache_database);
   ~PrecacheManager() override;
@@ -153,6 +156,8 @@ class PrecacheManager : public KeyedService,
 
   // From PrecacheFetcher::PrecacheDelegate.
   void OnDone() override;
+  void OnManifestFetched(const std::string& host,
+                         const PrecacheManifest& manifest) override;
 
   // Registers the precache synthetic field trial for users whom the precache
   // task was run recently. |last_precache_time| is the last time precache task
@@ -219,6 +224,10 @@ class PrecacheManager : public KeyedService,
   const data_reduction_proxy::DataReductionProxySettings* const
       data_reduction_proxy_settings_;
 
+  // The PrecacheManifestDelegate corresponding to the browser context. Used to
+  // notify browser about new manifest available. May be null.

[Benoit L, 2017/03/20 16:51:53]

nit: notify the browser about a new available manifest.

[alexilin, 2017/03/21 09:50:35]

Done.

+  PrecacheManifestDelegate* precache_manifest_delegate_;
+
   // The PrecacheFetcher used to precache resources. Should only be used on the
   // UI thread.
   std::unique_ptr<PrecacheFetcher> precache_fetcher_;