Pickle (serialize and deserialize) MultiThreadedCertVerifier's |cache_|

net/cert/multi_threaded_cert_verifier.h

Index: net/cert/multi_threaded_cert_verifier.h
diff --git a/net/cert/multi_threaded_cert_verifier.h b/net/cert/multi_threaded_cert_verifier.h
index 83d00dd583e0bb0668e6706c0514f4b8e3704e5f..acd0a91a21a7188f2120dd3a3acc45ef2f7dd88e 100644
--- a/net/cert/multi_threaded_cert_verifier.h
+++ b/net/cert/multi_threaded_cert_verifier.h
@@ -15,6 +15,7 @@
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/pickle.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/completion_callback.h"
 #include "net/base/expiring_cache.h"
@@ -81,8 +82,12 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier
   FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest, CancelRequest);
   FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest,
                            RequestParamsComparators);
+  FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest, PersistRequestParams);
   FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest,
                            CertTrustAnchorProvider);
+  FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest, PersistCache);
+  FRIEND_TEST_ALL_PREFIXES(MultiThreadedCertVerifierTest,
+                           PersistCacheExpiredEntry);
 
   // Input parameters of a certificate verification request.
   struct NET_EXPORT_PRIVATE RequestParams {
@@ -93,8 +98,20 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier
                   int flags_arg,
                   const CertificateList& additional_trust_anchors);
     RequestParams(const RequestParams& other);
+    RequestParams();
     ~RequestParams();
 
+    // Appends a representation of this object to the given pickle.
+    bool Persist(base::Pickle* pickle) const;
+
+    // Create an RequestParams from the representation stored in the given
+    // pickle. The data for this object is found relative to the given
+    // pickle_iter, which should be passed to the pickle's various Read*
+    // methods.
+    // Returns false on failure.
+    static bool CreateFromPickle(base::PickleIterator* iter,
+                                 RequestParams* param);
+
     bool operator<(const RequestParams& other) const;
 
     std::string hostname;
@@ -111,6 +128,17 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier
     CachedResult();
     ~CachedResult();
 
+    // Appends a representation of this object to the given pickle.
+    bool Persist(base::Pickle* pickle) const;
+
+    // Create an CachedResult from the representation stored in the given
+    // pickle. The data for this object is found relative to the given
+    // pickle_iter, which should be passed to the pickle's various Read*
+    // methods.
+    // Returns false on failure.
+    static bool CreateFromPickle(base::PickleIterator* iter,
+                                 CachedResult* result);
+
     int error;  // The return value of CertVerifier::Verify.
     CertVerifyResult result;  // The output of CertVerifier::Verify.
   };
@@ -123,15 +151,26 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier
   // ensure that expiration is measured both by the 'general' case (now + cache
   // TTL) and by whether or not significant enough clock skew was introduced
   // since the last verification.
-  struct CacheValidityPeriod {
+  struct NET_EXPORT_PRIVATE CacheValidityPeriod {
     explicit CacheValidityPeriod(const base::Time& now);
     CacheValidityPeriod(const base::Time& now, const base::Time& expiration);
 
+    // Appends a representation of this object to the given pickle.
+    bool Persist(base::Pickle* pickle) const;
+
+    // Create an CacheValidityPeriod from the representation stored in the given
+    // pickle. The data for this object is found relative to the given
+    // pickle_iter, which should be passed to the pickle's various Read*
+    // methods.
+    // Returns false on failure.
+    static bool CreateFromPickle(base::PickleIterator* iter,
+                                 CacheValidityPeriod* valid_period);
+
     base::Time verification_time;
     base::Time expiration_time;
   };
 
-  struct CacheExpirationFunctor {
+  struct NET_EXPORT_PRIVATE CacheExpirationFunctor {
     // Returns true iff |now| is within the validity period of |expiration|.
     bool operator()(const CacheValidityPeriod& now,
                     const CacheValidityPeriod& expiration) const;
@@ -150,6 +189,16 @@ class NET_EXPORT_PRIVATE MultiThreadedCertVerifier
   // Saves |result| into the cache, keyed by |key|.
   void SaveResultToCache(const RequestParams& key, const CachedResult& result);
 
+  // Appends a representation of |cache_| to the given pickle.
+  bool SerializeCache(base::Pickle* pickle);
+
+  // Populates |cache_| from the representation stored in the given pickle. The
+  // data for this object is found relative to the given pickle_iter, which
+  // should be passed to the pickle's various Read* methods.
+  // Returns false on failure.
+  static bool CreateFromPickle(base::PickleIterator* iter,
+                               MultiThreadedCertVerifier* cert_verifier);
+
   // CertDatabase::Observer methods:
   void OnCACertChanged(const X509Certificate* cert) override;