Convert //sql to use std::unique_ptr

chrome/browser/predictors/resource_prefetch_predictor_tables.cc

 // Copyright 2014 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 "chrome/browser/predictors/resource_prefetch_predictor_tables.h"
 
 #include <stdint.h>
 
 #include <algorithm>
+#include <memory>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
 #include "sql/statement.h"
 
 using content::BrowserThread;
 using sql::Statement;
@@ skipping 289 matching lines @@
 bool ResourcePrefetchPredictorTables::UpdateDataHelper(
     const PrefetchData& data) {
   DCHECK(!data.primary_key.empty());
 
   if (!StringsAreSmallerThanDBLimit(data)) {
     UMA_HISTOGRAM_BOOLEAN("ResourcePrefetchPredictor.DbStringTooLong", true);
     return false;
   }
 
   // Delete the older data from both the tables.
-  scoped_ptr<Statement> deleter(data.is_host() ?
-      GetHostResourceDeleteStatement() : GetUrlResourceDeleteStatement());
+  std::unique_ptr<Statement> deleter(data.is_host()
+                                         ? GetHostResourceDeleteStatement()
+                                         : GetUrlResourceDeleteStatement());
   deleter->BindString(0, data.primary_key);
   if (!deleter->Run())
     return false;
 
   deleter.reset(data.is_host() ? GetHostMetadataDeleteStatement() :
       GetUrlMetadataDeleteStatement());
   deleter->BindString(0, data.primary_key);
   if (!deleter->Run())
     return false;
 
   // Add the new data to the tables.
   const ResourceRows& resources = data.resources;
   for (ResourceRows::const_iterator it = resources.begin();
        it != resources.end(); ++it) {
-    scoped_ptr<Statement> resource_inserter(data.is_host() ?
-        GetHostResourceUpdateStatement() : GetUrlResourceUpdateStatement());
+    std::unique_ptr<Statement> resource_inserter(
+        data.is_host() ? GetHostResourceUpdateStatement()
+                       : GetUrlResourceUpdateStatement());
     BindResourceRowToStatement(*it, data.primary_key, resource_inserter.get());
     if (!resource_inserter->Run())
       return false;
   }
 
-  scoped_ptr<Statement> metadata_inserter(data.is_host() ?
-      GetHostMetadataUpdateStatement() : GetUrlMetadataUpdateStatement());
+  std::unique_ptr<Statement> metadata_inserter(
+      data.is_host() ? GetHostMetadataUpdateStatement()
+                     : GetUrlMetadataUpdateStatement());
   metadata_inserter->BindString(0, data.primary_key);
   metadata_inserter->BindInt64(1, data.last_visit.ToInternalValue());
   if (!metadata_inserter->Run())
     return false;
 
   return true;
 }
 
 void ResourcePrefetchPredictorTables::DeleteDataHelper(
     PrefetchKeyType key_type,
     const std::vector<std::string>& keys) {
   bool is_host = key_type == PREFETCH_KEY_TYPE_HOST;
 
   for (std::vector<std::string>::const_iterator it = keys.begin();
        it != keys.end(); ++it) {
-    scoped_ptr<Statement> deleter(is_host ? GetHostResourceDeleteStatement() :
-        GetUrlResourceDeleteStatement());
+    std::unique_ptr<Statement> deleter(is_host
+                                           ? GetHostResourceDeleteStatement()
+                                           : GetUrlResourceDeleteStatement());
     deleter->BindString(0, *it);
     deleter->Run();
 
     deleter.reset(is_host ? GetHostMetadataDeleteStatement() :
         GetUrlMetadataDeleteStatement());
     deleter->BindString(0, *it);
     deleter->Run();
   }
 }
 
@@ skipping 135 matching lines @@
 
 Statement* ResourcePrefetchPredictorTables::GetHostMetadataUpdateStatement() {
   return new Statement(DB()->GetCachedStatement(
       SQL_FROM_HERE,
       base::StringPrintf(
           "INSERT INTO %s (main_page_url, last_visit_time) VALUES (?,?)",
           kHostMetadataTableName).c_str()));
 }
 
 }  // namespace predictors