Remove explicit keyword from multi-argument constructors

chrome/browser/sync/glue/syncable_service_adapter.h

 // Copyright (c) 2011 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_SYNCABLE_SERVICE_ADAPTER_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNCABLE_SERVICE_ADAPTER_H_
 #pragma once
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/sync/api/syncable_service.h"
 #include "chrome/browser/sync/glue/model_associator.h"
 
 class SyncableService;
 
 namespace browser_sync {
 
 class GenericChangeProcessor;
 
 // An adapter to handle transitioning from model associator's to syncable
 // services. Implements the model associator interface, invoking the
 // provided SyncableService as necessary.
 class SyncableServiceAdapter : public AssociatorInterface {
  public:
-  explicit SyncableServiceAdapter(syncable::ModelType type,
-                                  SyncableService* service,
-                                  GenericChangeProcessor* sync_processor);
+  SyncableServiceAdapter(syncable::ModelType type,
+                         SyncableService* service,
+                         GenericChangeProcessor* sync_processor);
   virtual ~SyncableServiceAdapter();
 
   // AssociatorInterface implementation.
   virtual bool AssociateModels() OVERRIDE;
   virtual bool DisassociateModels() OVERRIDE;
   virtual bool SyncModelHasUserCreatedNodes(bool* has_nodes) OVERRIDE;
   virtual void AbortAssociation() OVERRIDE;
   virtual bool CryptoReadyIfNecessary() OVERRIDE;
 
  private:
   // Whether the SyncableService we wrap is currently syncing or not.
   bool syncing_;
 
   // The data type being provided by this service.
   syncable::ModelType type_;
 
   // A pointer to the actual local syncable service, which performs all the
   // real work.
   SyncableService* service_;
 
   // The datatype's SyncChange handler that interacts with the sync db.
   GenericChangeProcessor* sync_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncableServiceAdapter);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNCABLE_SERVICE_ADAPTER_H_