Appcache, local storage, indexed db, databases: skip exit-time deletion when restarting.

webkit/appcache/appcache_service.h

Index: webkit/appcache/appcache_service.h
diff --git a/webkit/appcache/appcache_service.h b/webkit/appcache/appcache_service.h
index f63ac25dfea24588a893f8e842bb18ef42d12761..e09b0e3bad66f9ba160a4593c8eecc36a09e75b1 100644
--- a/webkit/appcache/appcache_service.h
+++ b/webkit/appcache/appcache_service.h
@@ -144,6 +144,13 @@ class APPCACHE_EXPORT AppCacheService {
   void set_clear_local_state_on_exit(bool clear_local_state_on_exit) {
     clear_local_state_on_exit_ = clear_local_state_on_exit; }
 
+  bool save_session_state() const { return save_session_state_; }
+  // If |save_session_state| is true, disables the exit-time deletion for all
+  // data (also session-only data).
+  void set_save_session_state(bool save_session_state) {
+    save_session_state_ = save_session_state;
+  }
+
  protected:
   friend class AppCacheStorageImplTest;
   friend class AppCacheServiceTest;
@@ -171,6 +178,8 @@ class APPCACHE_EXPORT AppCacheService {
   // Context for use during cache updates.
   net::URLRequestContext* request_context_;
   bool clear_local_state_on_exit_;
+  // If true, nothing (not even session-only data) should be deleted on exit.
+  bool save_session_state_;
 
   DISALLOW_COPY_AND_ASSIGN(AppCacheService);
 };