Adding session-only localStorage.

content/browser/in_process_webkit/dom_storage_namespace.h

Index: content/browser/in_process_webkit/dom_storage_namespace.h
diff --git a/content/browser/in_process_webkit/dom_storage_namespace.h b/content/browser/in_process_webkit/dom_storage_namespace.h
index 1a6f1245ca35a5fc26dbceed445026288ba3933d..db4d691cd0a92d38874bfc3ac1dce7642c45c831 100644
--- a/content/browser/in_process_webkit/dom_storage_namespace.h
+++ b/content/browser/in_process_webkit/dom_storage_namespace.h
@@ -16,6 +16,10 @@ class DOMStorageArea;
 class DOMStorageContext;
 class FilePath;
 
+namespace IPC {
+class Message;
+}
+
 namespace WebKit {
 class WebStorageArea;
 class WebStorageNamespace;
@@ -24,6 +28,12 @@ class WebStorageNamespace;
 // Only to be used on the WebKit thread.
 class DOMStorageNamespace {
  public:
+  class Delegate {
+   public:
+    virtual void OnGotStorageArea(DOMStorageArea* storage_area,
+                                  IPC::Message* reply_msg) = 0;
+  };
+
   static DOMStorageNamespace* CreateLocalStorageNamespace(
       DOMStorageContext* dom_storage_context, const FilePath& data_dir_path);
   static DOMStorageNamespace* CreateSessionStorageNamespace(
@@ -31,7 +41,10 @@ class DOMStorageNamespace {
 
   ~DOMStorageNamespace();
 
-  DOMStorageArea* GetStorageArea(const string16& origin);
+  DOMStorageArea* GetStorageArea(const string16& origin,
+                                 DOMStorageNamespace::Delegate* delegate,
+                                 IPC::Message* reply_msg);
+
   DOMStorageNamespace* Copy(int64 clone_namespace_id);
 
   void PurgeMemory();
@@ -47,6 +60,12 @@ class DOMStorageNamespace {
   // by an owned DOMStorageArea.
   WebKit::WebStorageArea* CreateWebStorageArea(const string16& origin);
 
+  // Helpers for creating DOMStorageAreas.
+  DOMStorageArea* GetExistingStorageArea(const string16& origin);
+  DOMStorageArea* CreateStorageAreaInWebKitThread(const string16& origin,
+                                                  bool allow_permanent_storage,
+                                                  Delegate* delegate,
+                                                  IPC::Message* reply_msg);
  private:
   // Called by the static factory methods above.
   DOMStorageNamespace(DOMStorageContext* dom_storage_context,
@@ -77,6 +96,12 @@ class DOMStorageNamespace {
   // SessionStorage vs. LocalStorage.
   const DOMStorageType dom_storage_type_;
 
+  // A LocalStorage namespace holds a pointer to a session-only LocalStorage
+  // namespace. NULL if this DOMStorageNamespace is a SessionStorage, or a
+  // session-only LocalStorage, or a LocalStorage associated with an off the
+  // record profile.
+  scoped_ptr<DOMStorageNamespace> session_only_local_storage_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageNamespace);
 };