Persist sessionStorage on disk.

chrome/browser/profiles/profile.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/profiles/profile.h"
 
 #include <string>
 
 #include "build/build_config.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ skipping 21 matching lines @@
 Profile* Profile::FromBrowserContext(content::BrowserContext* browser_context) {
   // This is safe; this is the only implementation of the browser context.
   return static_cast<Profile*>(browser_context);
 }
 
 // static
 Profile* Profile::FromWebUI(content::WebUI* web_ui) {
   return FromBrowserContext(web_ui->GetWebContents()->GetBrowserContext());
 }
 
+bool Profile::ShouldSaveSessionStorageOnDisk() {
+  return false;
+}
+
 TestingProfile* Profile::AsTestingProfile() {
   return NULL;
 }
 
 // static
 const char* const Profile::kProfileKey = "__PROFILE__";
 
 // static
 void Profile::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterBooleanPref(prefs::kSearchSuggestEnabled,
@@ skipping 69 matching lines @@
   return is_guest_session;
 #else
   return false;
 #endif
 }
 
 bool Profile::IsSyncAccessible() {
   browser_sync::SyncPrefs prefs(GetPrefs());
   return ProfileSyncService::IsSyncEnabled() && !prefs.IsManaged();
 }