Support 32-bit subversion fields in base::Version.

chrome/browser/component_updater/sw_reporter_installer_win.cc

 // Copyright (c) 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/component_updater/sw_reporter_installer_win.h"
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
@@ skipping 103 matching lines @@
   uint32_t minor_version = 0;
   if (version.components().size() > 1)
     minor_version = version.components()[version.components().size() - 2];
   else
     minor_version = version.components()[0];
   UMA_HISTOGRAM_SPARSE_SLOWLY("SoftwareReporter.MinorVersion", minor_version);
 
   // The major version for X.Y.Z is X*256^3+Y*256+Z. If there are additional
   // components, only the first three count, and if there are less than 3, the
   // missing values are just replaced by zero. So 1 is equivalent 1.0.0.
-  DCHECK_LT(version.components()[0], 0x100);
+  DCHECK_LT(version.components()[0], 0x100U);
   uint32_t major_version = 0x1000000 * version.components()[0];
   if (version.components().size() >= 2) {
-    DCHECK_LT(version.components()[1], 0x10000);
+    DCHECK_LT(version.components()[1], 0x10000U);
     major_version += 0x100 * version.components()[1];
   }
   if (version.components().size() >= 3) {
-    DCHECK_LT(version.components()[2], 0x100);
+    DCHECK_LT(version.components()[2], 0x100U);
     major_version += version.components()[2];
   }
   UMA_HISTOGRAM_SPARSE_SLOWLY("SoftwareReporter.MajorVersion", major_version);
 }
 
 void ReportUploadsWithUma(const base::string16& upload_results) {
   base::WStringTokenizer tokenizer(upload_results, L";");
   int failure_count = 0;
   int success_count = 0;
   int longest_failure_run = 0;
@@ skipping 297 matching lines @@
   registry->RegisterStringPref(
       prefs::kSwReporterPromptVersion, "",
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 
   registry->RegisterStringPref(
       prefs::kSwReporterPromptSeed, "",
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 }  // namespace component_updater