Make default extension for downloading html "html" rather than "htm" on non-w...

chrome/browser/download/save_page_uitest.cc

 // Copyright (c) 2006-2008 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/file_util.h"
 #include "base/path_service.h"
 #include "base/platform_thread.h"
 #include "base/string_util.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/automation/url_request_mock_http_job.h"
@@ skipping 10 matching lines @@
 // http://crbug.com/15416
 #define MAYBE_FilenameFromPageTitle DISABLED_FilenameFromPageTitle
 #else
 #define MAYBE_SaveCompleteHTML SaveCompleteHTML
 #define MAYBE_SaveHTMLOnly SaveHTMLOnly
 #define MAYBE_FilenameFromPageTitle FilenameFromPageTitle
 #endif
 
 const char* const kTestDir = "save_page";
 
-const char* const kAppendedExtension = ".htm";
+const char* const kAppendedExtension =
+#if defined(OS_WIN)
+    ".htm";
+#else
+    ".html";
+#endif
 
 class SavePageTest : public UITest {
  protected:
   SavePageTest() : UITest() {}
 
   void CheckFile(const FilePath& client_file,
                  const FilePath& server_file,
                  bool check_equal) {
     file_util::FileInfo previous, current;
     bool exist = false;
@@ skipping 162 matching lines @@
   EXPECT_TRUE(browser->RunCommandAsync(IDC_SAVE_PAGE));
   EXPECT_TRUE(WaitForDownloadShelfVisible(browser.get()));
   automation()->SavePackageShouldPromptUser(true);
 
   CheckFile(full_file_name, FilePath::FromWStringHack(UTF8ToWide(file_name)),
             false);
   EXPECT_TRUE(DieFileDie(full_file_name, false));
   EXPECT_TRUE(DieFileDie(dir, true));
 }
 #endif