Fix the open file dialog on Windows

ui/base/win/open_file_name_win_unittest.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 "ui/base/win/open_file_name_win.h"
 
 #include "base/files/file_path.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ skipping 103 matching lines @@
   ASSERT_TRUE(ofn.GetOPENFILENAME()->lpstrFile);
   EXPECT_EQ(base::FilePath(), base::FilePath(ofn.GetOPENFILENAME()->lpstrFile));
 
   // File is ignored in absence of a directory.
   ofn.SetInitialSelection(base::FilePath(), kFile);
   ASSERT_FALSE(ofn.GetOPENFILENAME()->lpstrInitialDir);
   ASSERT_TRUE(ofn.GetOPENFILENAME()->lpstrFile);
   EXPECT_EQ(base::FilePath(), base::FilePath(ofn.GetOPENFILENAME()->lpstrFile));
 }
 
-TEST(OpenFileNameTest, GetSingleResult) {
+TEST(OpenFileNameTest, GetSingleResultFromSingleSelect) {
+  ui::win::OpenFileName ofn(kHwnd, kFlags);
+  base::FilePath result;
+
+  SetResult(L"C:\\dir\\file", &ofn);
+  result = ofn.GetSingleResult();
+  EXPECT_EQ(base::FilePath(L"C:\\dir\\file"), result);
+
+  SetResult(L"", &ofn);
+  result = ofn.GetSingleResult();
+  EXPECT_EQ(base::FilePath(), result);
+}
+
+TEST(OpenFileNameTest, GetSingleResultFromMultiSelect) {
   const base::string16 kNull(L"\0", 1);
-  ui::win::OpenFileName ofn(kHwnd, kFlags);
+  ui::win::OpenFileName ofn(kHwnd, kFlags | OFN_ALLOWMULTISELECT);
   base::FilePath result;
 
   SetResult(L"C:\\dir\\file" + kNull, &ofn);
   result = ofn.GetSingleResult();
   EXPECT_EQ(base::FilePath(L"C:\\dir\\file"), result);
 
   SetResult(L"C:\\dir" + kNull + L"file" + kNull, &ofn);
   result = ofn.GetSingleResult();
   EXPECT_EQ(base::FilePath(L"C:\\dir\\file"), result);
 
   SetResult(L"C:\\dir" + kNull + L"file" + kNull + L"otherfile" + kNull, &ofn);
   result = ofn.GetSingleResult();
   EXPECT_EQ(base::FilePath(), result);
 
   SetResult(L"", &ofn);
   result = ofn.GetSingleResult();
   EXPECT_EQ(base::FilePath(), result);
 }
 
 TEST(OpenFileNameTest, GetResult) {
   const base::string16 kNull(L"\0", 1);
 
-  ui::win::OpenFileName ofn(kHwnd, kFlags);
+  ui::win::OpenFileName ofn(kHwnd, kFlags | OFN_ALLOWMULTISELECT);
   base::FilePath directory;
   std::vector<base::FilePath> filenames;
 
   SetResult(L"C:\\dir\\file" + kNull, &ofn);
   ofn.GetResult(&directory, &filenames);
   EXPECT_EQ(base::FilePath(L"C:\\dir"), directory);
   ASSERT_EQ(1u, filenames.size());
   EXPECT_EQ(base::FilePath(L"file"), filenames[0]);
 
   directory.clear();
@@ skipping 67 matching lines @@
   ui::win::OpenFileName::SetResult(directory, filenames, ofn.GetOPENFILENAME());
   CheckResult(L"C:\\dir" + kNull + L"file" + kNull + L"otherfile" + kNull, ofn);
 
   base::char16 short_buffer[10] = L"";
 
   ofn.GetOPENFILENAME()->lpstrFile = short_buffer;
   ofn.GetOPENFILENAME()->nMaxFile = arraysize(short_buffer);
   ui::win::OpenFileName::SetResult(directory, filenames, ofn.GetOPENFILENAME());
   CheckResult(L"", ofn);
 }