Fix uninitialized fields in Printer::PPDFile.

chromeos/printing/printer_configuration.h

 // Copyright 2016 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 CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_
 #define CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "chromeos/chromeos_export.h"
 
 namespace chromeos {
 
 class CHROMEOS_EXPORT Printer {
  public:
   // Represents a Postscript Printer Description with which the printer was
   // setup.
   struct PPDFile {
     // Identifier from the quirks server. -1 otherwise.
-    int id;
+    int id = -1;
 
     std::string file_name;
 
     // If there is a file with a later version on the quirks server, that file
     // should be used. The default value is 0.
-    int version_number;
+    int version_number = 0;
 
     // This will be true if the file was retrived from the quirks server.
     // Otherwise, the file was saved to disk by the user.
-    bool from_quirks_server;
+    bool from_quirks_server = false;
   };
 
   // Constructs a printer object that is completely empty.
   Printer();
 
   // Constructs a printer object with an id.
   explicit Printer(const std::string& id);
 
   ~Printer();
 
@@ skipping 52 matching lines @@
 
   // The UUID from an autoconf protocol for deduplication. Could be empty.
   std::string uuid_;
 
   DISALLOW_COPY_AND_ASSIGN(Printer);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_PRINTING_PRINTER_CONFIGURATION_H_