Add an SignedCertificateTimetampStore, making SignedCertificateTimestamp be refcounted to aid.

content/content_browser.gypi

Index: content/content_browser.gypi
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index 66eb8ff23406bbaae60a220b8038e3f1bb2b330b..d9f524af679c4a74d19ba56e079d88ba7c135ffc 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -166,6 +166,7 @@
     'public/browser/save_page_type.h',
     'public/browser/session_storage_namespace.h',
     'public/browser/session_storage_usage_info.h',
+    'public/browser/signed_certificate_timestamp_store.h',
     'public/browser/site_instance.h',
     'public/browser/speech_recognition_event_listener.h',
     'public/browser/speech_recognition_manager.h',
@@ -735,17 +736,6 @@
     'browser/message_port_service.h',
     'browser/mime_registry_message_filter.cc',
     'browser/mime_registry_message_filter.h',
-    'browser/service_worker/service_worker_context.h',
-    'browser/service_worker/service_worker_context_core.cc',
-    'browser/service_worker/service_worker_context_core.h',
-    'browser/service_worker/service_worker_context_wrapper.cc',
-    'browser/service_worker/service_worker_context_wrapper.h',
-    'browser/service_worker/service_worker_dispatcher_host.cc',
-    'browser/service_worker/service_worker_dispatcher_host.h',
-    'browser/service_worker/service_worker_registration.cc',
-    'browser/service_worker/service_worker_registration.h',
-    'browser/service_worker/service_worker_version.cc',
-    'browser/service_worker/service_worker_version.h',
     'browser/net/browser_online_state_observer.cc',
     'browser/net/browser_online_state_observer.h',
     'browser/net/sqlite_persistent_cookie_store.cc',
@@ -1092,6 +1082,19 @@
     'browser/resource_context_impl.h',
     'browser/safe_util_win.cc',
     'browser/safe_util_win.h',
+    'browser/service_worker/service_worker_context.h',
+    'browser/service_worker/service_worker_context_core.cc',
+    'browser/service_worker/service_worker_context_core.h',
+    'browser/service_worker/service_worker_context_wrapper.cc',
+    'browser/service_worker/service_worker_context_wrapper.h',
+    'browser/service_worker/service_worker_dispatcher_host.cc',
+    'browser/service_worker/service_worker_dispatcher_host.h',
+    'browser/service_worker/service_worker_registration.cc',
+    'browser/service_worker/service_worker_registration.h',
+    'browser/service_worker/service_worker_version.cc',
+    'browser/service_worker/service_worker_version.h',
+    'browser/signed_certificate_timestamp_store_impl.cc',
+    'browser/signed_certificate_timestamp_store_impl.h',
     'browser/site_instance_impl.cc',
     'browser/site_instance_impl.h',
     'browser/speech/audio_buffer.cc',
@@ -1292,6 +1295,7 @@
         ['include', '^browser/cert_store_impl\\.cc$'],
         ['include', '^browser/download/download_create_info\\.cc$'],
         ['include', '^browser/notification_service_impl\\.cc$'],
+        ['include', '^browser/signed_certificate_timestamp_store_impl\\.cc$'],
         ['include', '^browser/user_metrics\\.cc$'],
         ['include', '^browser/web_contents/navigation_entry_impl\\.cc$'],
       ],