Fix PP_FileOpenFlags_Dev handling:

base/platform_file_win.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.
 
 #include "base/platform_file.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/threading/thread_restrictions.h"
 
@@ skipping 20 matching lines @@
   if (flags & PLATFORM_FILE_OPEN_ALWAYS) {
     DCHECK(!disposition);
     disposition = OPEN_ALWAYS;
   }
 
   if (flags & PLATFORM_FILE_CREATE_ALWAYS) {
     DCHECK(!disposition);
     disposition = CREATE_ALWAYS;
   }
 
-  if (flags & PLATFORM_FILE_TRUNCATE) {
+  if (flags & PLATFORM_FILE_OPEN_TRUNCATED) {
     DCHECK(!disposition);
     DCHECK(flags & PLATFORM_FILE_WRITE);
     disposition = TRUNCATE_EXISTING;
   }
 
   if (!disposition) {
     NOTREACHED();
     return NULL;
   }
 
@@ skipping 159 matching lines @@
   info->is_directory =
       file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY != 0;
   info->is_symbolic_link = false; // Windows doesn't have symbolic links.
   info->last_modified = base::Time::FromFileTime(file_info.ftLastWriteTime);
   info->last_accessed = base::Time::FromFileTime(file_info.ftLastAccessTime);
   info->creation_time = base::Time::FromFileTime(file_info.ftCreationTime);
   return true;
 }
 
 }  // namespace disk_cache