Convert utility process extension ParseUpdate IPC to mojo

extensions/common/update_manifest.h

 // 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.
 
 #ifndef EXTENSIONS_COMMON_UPDATE_MANIFEST_H_
 #define EXTENSIONS_COMMON_UPDATE_MANIFEST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 22 matching lines @@
   //
   // The "appid" attribute of the <app> tag refers to the unique id of the
   // extension. The "codebase" attribute of the <updatecheck> tag is the url to
   // fetch the updated crx file, and the "prodversionmin" attribute refers to
   // the minimum version of the chrome browser that the update applies to.
 
   // The diff data members correspond to the differential update package, if
   // a differential update is specified in the response.
 
   // The result of parsing one <app> tag in an xml update check manifest.
+  // TODO(crbug.com/692120): consider removing struct Result and Results and
+  // using the corresponding mojo type instead. This would also remove the
+  // need for the Mojo struct traits that are currently defined / used to
+  // cart these Result/Results structs over Mojo IPC.
   struct Result {
     Result();
     Result(const Result& other);
     ~Result();
 
     std::string extension_id;
     std::string version;
     std::string browser_min_version;
 
     // Attributes for the full update.
     GURL crx_url;
     std::string package_hash;
     int size;
     std::string package_fingerprint;
 
     // Attributes for the differential update.
     GURL diff_crx_url;
     std::string diff_package_hash;
     int diff_size;
   };
 
   static const int kNoDaystart = -1;
   struct Results {
     Results();
+    Results(const Results& other);
+    Results& operator=(const Results& other);
     ~Results();
 
     std::vector<Result> list;
     // This will be >= 0, or kNoDaystart if the <daystart> tag was not present.
     int daystart_elapsed_seconds;
   };
 
   UpdateManifest();
   ~UpdateManifest();
 
@@ skipping 10 matching lines @@
   Results results_;
   std::string errors_;
 
   // Helper function that adds parse error details to our errors_ string.
   void ParseError(const char* details, ...);
 
   DISALLOW_COPY_AND_ASSIGN(UpdateManifest);
 };
 
 #endif  // EXTENSIONS_COMMON_UPDATE_MANIFEST_H_