Remove context-based dependencies on SyncerSession from ApplyUpdatesCommand....

chrome/browser/sync/engine/apply_updates_command.h

Index: chrome/browser/sync/engine/apply_updates_command.h
===================================================================
--- chrome/browser/sync/engine/apply_updates_command.h	(revision 30625)
+++ chrome/browser/sync/engine/apply_updates_command.h	(working copy)
@@ -6,7 +6,6 @@
 #define CHROME_BROWSER_SYNC_ENGINE_APPLY_UPDATES_COMMAND_H_
 
 #include "chrome/browser/sync/engine/model_changing_syncer_command.h"
-#include "chrome/browser/sync/engine/syncer_session.h"
 #include "chrome/browser/sync/util/sync_types.h"
 
 namespace syncable {
@@ -17,6 +16,8 @@
 
 namespace browser_sync {
 
+class SyncerSession;
+
 class ApplyUpdatesCommand : public ModelChangingSyncerCommand {
  public:
   ApplyUpdatesCommand();