Fix a bunch of IWYU violators that don't include scoped_ptr.h

components/gcm_driver/crypto/gcm_encryption_provider.h

 // Copyright 2015 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 COMPONENTS_GCM_DRIVER_CRYPTO_GCM_ENCRYPTION_PROVIDER_H_
 #define COMPONENTS_GCM_DRIVER_CRYPTO_GCM_ENCRYPTION_PROVIDER_H_
 
 #include <stdint.h>
+
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 
 namespace base {
 class FilePath;
 class SequencedTaskRunner;
 }
 
 namespace gcm {
 
 class GCMKeyStore;
@@ skipping 99 matching lines @@
   scoped_ptr<GCMKeyStore> key_store_;
 
   base::WeakPtrFactory<GCMEncryptionProvider> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMEncryptionProvider);
 };
 
 }  // namespace gcm
 
 #endif  // COMPONENTS_GCM_DRIVER_CRYPTO_GCM_ENCRYPTION_PROVIDER_H_