Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/common/api/declarative/declarative_manifest_handler.cc

 // 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.
 
 #include "extensions/common/api/declarative/declarative_manifest_handler.h"
 
 #include "extensions/common/api/declarative/declarative_manifest_data.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest_constants.h"
 
 namespace extensions {
 
 DeclarativeManifestHandler::DeclarativeManifestHandler() {
 }
 
 DeclarativeManifestHandler::~DeclarativeManifestHandler() {
 }
 
 bool DeclarativeManifestHandler::Parse(Extension* extension,
                                        base::string16* error) {
   const base::Value* event_rules = NULL;
   CHECK(extension->manifest()->Get(manifest_keys::kEventRules, &event_rules));
-  scoped_ptr<DeclarativeManifestData> data =
+  std::unique_ptr<DeclarativeManifestData> data =
       DeclarativeManifestData::FromValue(*event_rules, error);
   if (!data)
     return false;
 
   extension->SetManifestData(manifest_keys::kEventRules, data.release());
   return true;
 }
 
 const std::vector<std::string> DeclarativeManifestHandler::Keys() const {
   return SingleKey(manifest_keys::kEventRules);
 }
 
 }  // namespace extensions