Persist sessionStorage on disk.

chrome/browser/profiles/profile_impl.cc

Index: chrome/browser/profiles/profile_impl.cc
diff --git a/chrome/browser/profiles/profile_impl.cc b/chrome/browser/profiles/profile_impl.cc
index d77edf8ec9633d8e0c64750bb007a9dd9b2f3034..080047c96852a18b9804fb34549c3d34e2fc4892 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -80,6 +80,7 @@
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/dom_storage_context.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/user_metrics.h"
@@ -300,6 +301,11 @@ ProfileImpl::ProfileImpl(const FilePath& path,
   } else {
     NOTREACHED();
   }
+
+  if (command_line->HasSwitch(switches::kEnableRestoreSessionState)) {
+    content::BrowserContext::GetDOMStorageContext(this)->

[sail, 2012/07/12 17:20:04]

I guess this is ok. I still think this doesn't have anything to do with profiles
and shouldn't be in this class.

Couldn't you just add something to the store code? Something like:
  if (!my_profile->is_incognito())
    SetSaveSessionStorageOnDisk();

[marja, 2012/07/13 09:05:17]

The dom storage layer doesn't know about profiles, the code is in content/ and
in webkit/.

Also, we wanted to make it so that some content/ embedders can say "session
storage should be saved on disk" (e.g., chrome, which does session restore) and
some can say "session storage shouldn't be saved on disk".

(However, see the comment where michaeln suggests putting the decision to
ContentClient or ContentBrowserClient.)

+        SetSaveSessionStorageOnDisk();
+  }
 }
 
 void ProfileImpl::DoFinalInit(bool is_new_profile) {