sync: Make BaseNode lookup-related Init functions return specific failures.

chrome/browser/sync/glue/model_associator.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_H_
 #define CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/synchronization/lock.h"
@@ skipping 59 matching lines @@
   // chrome id.
   virtual int64 GetSyncIdFromChromeId(const IDType& id) = 0;
 
   // Returns the chrome node for the given sync id.
   // Returns NULL if no node is found for the given sync id.
   virtual const Node* GetChromeNodeFromSyncId(int64 sync_id) = 0;
 
   // Initializes the given sync node from the given chrome node id.
   // Returns false if no sync node was found for the given chrome node id or
   // if the initialization of sync node fails.
-  virtual bool InitSyncNodeFromChromeId(const IDType& node_id,
-                                        sync_api::BaseNode* sync_node) = 0;
+  virtual bool InitSyncNodeFromChromeId(
+      const IDType& node_id,
+      sync_api::BaseNode* sync_node) = 0;
 
   // Associates the given chrome node with the given sync id.
   virtual void Associate(const Node* node, int64 sync_id) = 0;
 
   // Remove the association that corresponds to the given sync id.
   virtual void Disassociate(int64 sync_id) = 0;
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_MODEL_ASSOCIATOR_H_