First pass at fixing guest browser cookies issue.

chrome/browser/profiles/profile_manager.h

Index: chrome/browser/profiles/profile_manager.h
diff --git a/chrome/browser/profiles/profile_manager.h b/chrome/browser/profiles/profile_manager.h
index c16b6df8736a59c25eccfc0b8a68ef5fd76339b6..2d8bbdf3355090b21562b37772de75020fd82d78 100644
--- a/chrome/browser/profiles/profile_manager.h
+++ b/chrome/browser/profiles/profile_manager.h
@@ -142,6 +142,13 @@ class ProfileManager : public base::NonThreadSafe,
   // Returns the full path to be used for system profiles.
   static base::FilePath GetSystemProfilePath();
 
+  // Deletes the Profile from memory, removes it from the ProfileInfoCache and
+  // from the ProfileManager.
+  // DANGER: Only call this for a Guest Profile. Anything else will likely
+  // explode and lead to insanity.
+  // Exercise for the reader: Solve insanity.
+  void DeleteProfile(Profile* profile);
+
   // Get the path of the next profile directory and increment the internal
   // count.
   // Lack of side effects: