Coverity Fixlets.

chrome/browser/sessions/session_backend.cc

 // Copyright (c) 2010 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/sessions/session_backend.h"
 
 #include <limits>
 
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "base/scoped_vector.h"
 #include "net/base/file_stream.h"
+#include "net/base/net_errors.h"
 
 using base::TimeTicks;
 
 // File version number.
 static const int32 kFileCurrentVersion = 1;
 
 // The signature at the beginning of the file = SSNS (Sessions).
 static const int32 kFileSignature = 0x53534E53;
 
 namespace {
@@ skipping 335 matching lines @@
       current_session_file_.reset(NULL);
   }
   if (!current_session_file_.get())
     current_session_file_.reset(OpenAndWriteHeader(GetCurrentSessionPath()));
   empty_file_ = true;
 }
 
 net::FileStream* SessionBackend::OpenAndWriteHeader(const FilePath& path) {
   DCHECK(!path.empty());
   scoped_ptr<net::FileStream> file(new net::FileStream());
-  file->Open(path, base::PLATFORM_FILE_CREATE_ALWAYS |
-             base::PLATFORM_FILE_WRITE | base::PLATFORM_FILE_EXCLUSIVE_WRITE |
-             base::PLATFORM_FILE_EXCLUSIVE_READ);
-  if (!file->IsOpen())
+  if (file->Open(path, base::PLATFORM_FILE_CREATE_ALWAYS |
+      base::PLATFORM_FILE_WRITE | base::PLATFORM_FILE_EXCLUSIVE_WRITE |
+      base::PLATFORM_FILE_EXCLUSIVE_READ) != net::OK)
     return NULL;
   FileHeader header;
   header.signature = kFileSignature;
   header.version = kFileCurrentVersion;
   int wrote = file->Write(reinterpret_cast<char*>(&header),
                           sizeof(header), NULL);
   if (wrote != sizeof(header))
     return NULL;
   return file.release();
 }
 
 FilePath SessionBackend::GetLastSessionPath() {
   FilePath path = path_to_dir_;
   if (type_ == BaseSessionService::TAB_RESTORE)
     path = path.AppendASCII(kLastTabSessionFileName);
   else
     path = path.AppendASCII(kLastSessionFileName);
   return path;
 }
 
 FilePath SessionBackend::GetCurrentSessionPath() {
   FilePath path = path_to_dir_;
   if (type_ == BaseSessionService::TAB_RESTORE)
     path = path.AppendASCII(kCurrentTabSessionFileName);
   else
     path = path.AppendASCII(kCurrentSessionFileName);
   return path;
 }