Fix disabled InstallerStateTest.RemoveOldVersionDirs on x64

chrome/installer/test/alternate_version_generator.cc

 // Copyright (c) 2011 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.
 
 // The file contains the implementation of the mini_installer re-versioner.
 // The main function (GenerateNextVersion) does the following in a temp dir:
 // - Extracts and unpacks setup.exe and the Chrome-bin folder from
 //   mini_installer.exe.
 // - Inspects setup.exe to determine the current version.
 // - Runs through all .dll and .exe files:
@@ skipping 161 matching lines @@
   }
 }
 
 bool MappedFile::Initialize(base::PlatformFile file) {
   DCHECK(mapping_ == NULL);
   bool result = false;
   base::PlatformFileInfo file_info;
 
   if (base::GetPlatformFileInfo(file, &file_info)) {
     if (file_info.size <=
-        static_cast<int64>(std::numeric_limits<size_t>::max())) {
+        static_cast<int64>(std::numeric_limits<DWORD>::max())) {

[robertshield, 2013/04/29 20:04:45]

Really curious: how does this fix the test?

       mapping_ = CreateFileMapping(file, NULL, PAGE_READWRITE, 0,
                                    static_cast<DWORD>(file_info.size), NULL);
       if (mapping_ != NULL) {
         view_ = MapViewOfFile(mapping_, FILE_MAP_WRITE, 0, 0,
                               static_cast<size_t>(file_info.size));
         if (view_ != NULL) {
           result = true;
         } else {
           PLOG(DFATAL) << "MapViewOfFile failed";
         }
       } else {
         PLOG(DFATAL) << "CreateFileMapping failed";
       }
     } else {
-      LOG(DFATAL) << "Files larger than " << std::numeric_limits<size_t>::max()
+      LOG(DFATAL) << "Files larger than " << std::numeric_limits<DWORD>::max()
                   << " are not supported.";
     }
   } else {
     PLOG(DFATAL) << "GetPlatformFileInfo failed";
   }
   return result;
 }
 
 // Calls CreateProcess with good default parameters and waits for the process
 // to terminate returning the process exit code.
@@ skipping 484 matching lines @@
     return false;
   }
   ctx.current_version_str = ctx.current_version.ToString();
   ctx.new_version = ChromeVersion::FromString(version.GetString());
   ctx.new_version_str = ctx.new_version.ToString();
 
   return UpdateVersionIfMatch(target_file, &ctx);
 }
 
 }  // namespace upgrade_test