SessionRestore: Store session cookies and restore them if chrome crashes or auto-restarts.

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index 2cf9b6d7f029e061a3a37f77ac75d04d08d316c1..503c699d15d9706e0f13e4b8348865d42a767920 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -490,6 +490,15 @@ class Profile : public content::BrowserContext {
   // prerender or prefetch a result.
   virtual NetworkActionPredictor* GetNetworkActionPredictor() = 0;
 
+  // Makes the session state, e.g., cookies, persistent across the next restart.
+  virtual void SaveSessionState() {}
+
+  // Restores the saved session state, e.g., cookies, after a restart.
+  virtual void RestoreSessionState() {}
+
+  // Discards the saved session state, e.g., cookies, after a restart.
+  virtual void DiscardSessionState() {}
+
   std::string GetDebugName();
 
   // Returns whether it is a guest session.