Merge 10246 - Fixes issue with download shelf not warning on .exe files...

chrome/browser/download/download_manager.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 "chrome/browser/download/download_manager.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ skipping 1214 matching lines @@
   }
   for (size_t i = 0; i < arraysize(kExecutableBlackList); ++i) {
     if (net::MatchesMimeType(kExecutableBlackList[i], mime_type))
       return false;
   }
   // We consider only other application types to be executable.
   return net::MatchesMimeType("application/*", mime_type);
 }
 
 bool DownloadManager::IsExecutable(const FilePath::StringType& extension) {
-  return exe_types_.find(extension) != exe_types_.end();
+#if defined(OS_WIN)
+  if (!IsStringASCII(extension))
+    return false;
+  std::string ascii_extension = WideToASCII(extension);
+  StringToLowerASCII(&ascii_extension);
+
+  return exe_types_.find(ascii_extension) != exe_types_.end();
+#elif defined(OS_POSIX)
+  // TODO(port): we misght not want to call this function on other platforms.
+  // Figure it out.
+  NOTIMPLEMENTED();
+  return false;
+#endif
 }
 
 void DownloadManager::ResetAutoOpenFiles() {
   auto_open_.clear();
   SaveAutoOpens();
 }
 
 bool DownloadManager::HasAutoOpenFileTypesRegistered() const {
   return !auto_open_.empty();
 }
@@ skipping 173 matching lines @@
       searched_downloads.push_back(dit->second);
   }
 
   requestor->SetDownloads(searched_downloads);
 }
 
 // Clears the last download path, used to initialize "save as" dialogs.
 void DownloadManager::ClearLastDownloadPath() {
   last_download_path_ = FilePath();
 }