Update SplitString calls in chrome.

chrome/browser/download/download_prefs.cc

 // Copyright (c) 2012 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_prefs.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 141 matching lines @@
 
   prompt_for_download_.Init(prefs::kPromptForDownload, prefs);
   download_path_.Init(prefs::kDownloadDefaultDirectory, prefs);
   save_file_path_.Init(prefs::kSaveFileDefaultDirectory, prefs);
   save_file_type_.Init(prefs::kSaveFileType, prefs);
 
   // We store any file extension that should be opened automatically at
   // download completion in this pref.
   std::string extensions_to_open =
       prefs->GetString(prefs::kDownloadExtensionsToOpen);
-  std::vector<std::string> extensions;
-  base::SplitString(extensions_to_open, ':', &extensions);
 
-  for (const auto& extension_string : extensions) {
+  for (const auto& extension_string : base::SplitString(
+           extensions_to_open, ":",
+           base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
 #if defined(OS_POSIX)
     base::FilePath::StringType extension = extension_string;
 #elif defined(OS_WIN)
     base::FilePath::StringType extension = base::UTF8ToWide(extension_string);
 #endif
     // If it's empty or malformed or not allowed to open automatically, then
     // skip the entry. Any such entries will be dropped from preferences the
     // next time SaveAutoOpenState() is called.
     if (extension.empty() ||
         *extension.begin() == base::FilePath::kExtensionSeparator)
@@ skipping 205 matching lines @@
     extensions.erase(extensions.size() - 1);
 
   profile_->GetPrefs()->SetString(prefs::kDownloadExtensionsToOpen, extensions);
 }
 
 bool DownloadPrefs::AutoOpenCompareFunctor::operator()(
     const base::FilePath::StringType& a,
     const base::FilePath::StringType& b) const {
   return base::FilePath::CompareLessIgnoreCase(a, b);
 }