Make kClearSiteDataOnExit work correctly for Flash in multi-profile.

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
===================================================================
--- chrome/browser/profiles/profile_io_data.h	(revision 90949)
+++ chrome/browser/profiles/profile_io_data.h	(working copy)
@@ -96,6 +96,10 @@
   HostContentSettingsMap* GetHostContentSettingsMap() const;
   DesktopNotificationService* GetNotificationService() const;
 
+  BooleanPrefMember* clear_local_state_on_exit()  const {
+    return &clear_local_state_on_exit_;
+  }
+
  protected:
   friend class base::RefCountedThreadSafe<ProfileIOData>;
 
@@ -238,6 +242,7 @@
 
   // Member variables which are pointed to by the various context objects.
   mutable BooleanPrefMember enable_referrers_;
+  mutable BooleanPrefMember clear_local_state_on_exit_;
 
   // Pointed to by URLRequestContext.
   mutable scoped_ptr<ChromeURLDataManagerBackend>