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 d1a52e61d1349ce5b0cb899df01b899e6282ec27..8a2f4aec927bf4b6e2e17490814ab2c17786d52d 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -494,6 +494,9 @@ 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() {}
+
   std::string GetDebugName();
 
   // Returns whether it is a guest session.