Split TabRestoreService into InMemoryTRS and PersistentTRS

chrome/browser/sessions/base_session_service.h

Index: chrome/browser/sessions/base_session_service.h
diff --git a/chrome/browser/sessions/base_session_service.h b/chrome/browser/sessions/base_session_service.h
index 63808f2cb1e2325904b54307f5ec930c7e1a47a0..529f9b5bfaf1c8f1a7de2c4afa9394a53b38a9ec 100644
--- a/chrome/browser/sessions/base_session_service.h
+++ b/chrome/browser/sessions/base_session_service.h
@@ -13,7 +13,6 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/common/cancelable_request.h"
-#include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "googleurl/src/gurl.h"
 
@@ -26,8 +25,7 @@ class TabNavigation;
 // session service. It contains commonality needed by both, in particular
 // it manages a set of SessionCommands that are periodically sent to a
 // SessionBackend.
-class BaseSessionService : public CancelableRequestProvider,
-                           public ProfileKeyedService {
+class BaseSessionService : public CancelableRequestProvider {
  public:
   // Identifies the type of session service this is. This is used by the
   // backend to determine the name of the files.