Adding session-only localStorage.

content/browser/in_process_webkit/dom_storage_message_filter.h

Index: content/browser/in_process_webkit/dom_storage_message_filter.h
diff --git a/content/browser/in_process_webkit/dom_storage_message_filter.h b/content/browser/in_process_webkit/dom_storage_message_filter.h
index 9ac90346930789272e8b90e6c1e42bc84d1bdbf0..d763dbb7b975ad7326383eaf86024cea8e1f96b3 100644
--- a/content/browser/in_process_webkit/dom_storage_message_filter.h
+++ b/content/browser/in_process_webkit/dom_storage_message_filter.h
@@ -10,6 +10,7 @@
 #include "base/process.h"
 #include "base/tracked.h"
 #include "content/browser/browser_message_filter.h"
+#include "content/browser/content_browser_client.h"
 #include "content/browser/in_process_webkit/dom_storage_area.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
 #include "content/common/dom_storage_common.h"
@@ -18,6 +19,10 @@ class DOMStorageContext;
 class GURL;
 struct DOMStorageMsg_Event_Params;
 
+namespace dom_storage_test_helpers {
+class SessionOnlyTestHelper;
+}
+
 // This class handles the logistics of DOM Storage within the browser process.
 // It mostly ferries information between IPCs and the WebKit implementations,
 // but it also handles some special cases like when renderer processes die.
@@ -42,11 +47,12 @@ class DOMStorageMessageFilter : public BrowserMessageFilter {
  private:
   friend class BrowserThread;
   friend class DeleteTask<DOMStorageMessageFilter>;
+  friend class dom_storage_test_helpers::SessionOnlyTestHelper;
   virtual ~DOMStorageMessageFilter();
 
   // Message Handlers.
   void OnStorageAreaId(int64 namespace_id, const string16& origin,
-                       int64* storage_area_id);
+                       IPC::Message* reply_msg);
   void OnLength(int64 storage_area_id, unsigned* length);
   void OnKey(int64 storage_area_id, unsigned index, NullableString16* key);
   void OnGetItem(int64 storage_area_id, const string16& key,
@@ -67,6 +73,11 @@ class DOMStorageMessageFilter : public BrowserMessageFilter {
     return webkit_context_->dom_storage_context();
   }
 
+  void OnStorageAreaIdOnWebKitThread(int64 namespace_id,
+                                     const string16& origin,
+                                     bool allow_permanent_storage,
+                                     IPC::Message* reply_msg);
+
   // Use whenever there's a chance OnStorageEvent will be called.
   class ScopedStorageEventContext {
    public: