Update sync/, sql/, and printing/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

sql/statement.cc

 // 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.
 
 #include "sql/statement.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/sqlite/sqlite3.h"
@@ skipping 290 matching lines @@
   // TODO(gbillock,shess): make this invalidate the statement so it
   // can't wreak havoc.
   if (err == SQLITE_RANGE)
     DLOG(FATAL) << "Bind value out of range";
   return err == SQLITE_OK;
 }
 
 int Statement::CheckError(int err) {
   // Please don't add DCHECKs here, OnSqliteError() already has them.
   succeeded_ = (err == SQLITE_OK || err == SQLITE_ROW || err == SQLITE_DONE);
-  if (!succeeded_ && ref_ && ref_->connection())
+  if (!succeeded_ && ref_.get() && ref_->connection())
     return ref_->connection()->OnSqliteError(err, this);
   return err;
 }
 
 }  // namespace sql