win: Implementation of CrashReportDatabase for Windows

client/crash_report_database_test.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 12 matching lines @@
 namespace crashpad {
 namespace test {
 namespace {
 
 bool FileExistsAtPath(const base::FilePath& path) {
 #if defined(OS_POSIX)
   struct stat st;
   return lstat(path.value().c_str(), &st) == 0;
 #elif defined(OS_WIN)
   struct _stat st;
-  return _wstat(path.value().c_str(), &st);
+  return _wstat(path.value().c_str(), &st) == 0;
 #else
 #error "Not implemented"
 #endif
 }
 
 void CreateFile(const base::FilePath& path) {
   FileHandle handle = LoggingOpenFileForWrite(path,
                                               FileWriteMode::kCreateOrFail,
                                               FilePermissions::kWorldReadable);
 #if defined(OS_POSIX)
@@ skipping 386 matching lines @@
             db()->GetReportForUploading(report.uuid, &upload_report_2));
   EXPECT_FALSE(upload_report_2);
 
   EXPECT_EQ(CrashReportDatabase::kNoError,
             db()->RecordUploadAttempt(upload_report, true, ""));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad