Remove remaining legacy SplitString calls.

ppapi/proxy/file_chooser_resource.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 "ppapi/proxy/file_chooser_resource.h"
 
 #include "base/bind.h"
 #include "base/strings/string_split.h"
 #include "ipc/ipc_message.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 60 matching lines @@
   return ShowInternal(save_as, suggested_file_name, callback);
 }
 
 // static
 void FileChooserResource::PopulateAcceptTypes(
     const std::string& input,
     std::vector<std::string>* output) {
   if (input.empty())
     return;
 
-  std::vector<std::string> type_list;
-  base::SplitString(input, ',', &type_list);
+  std::vector<std::string> type_list = base::SplitString(
+      input, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
   output->reserve(type_list.size());
 
   for (size_t i = 0; i < type_list.size(); ++i) {
     std::string type = type_list[i];
     base::TrimWhitespaceASCII(type, base::TRIM_ALL, &type);
 
     // If the type is a single character, it definitely cannot be valid. In the
     // case of a file extension it would be a single ".". In the case of a MIME
     // type it would just be a "/".
     if (type.length() < 2)
@@ skipping 52 matching lines @@
         mode_ == PP_FILECHOOSERMODE_OPENMULTIPLE,
         sugg_str ? sugg_str->value() : std::string(),
         accept_types_);
   Call<PpapiPluginMsg_FileChooser_ShowReply>(RENDERER, msg,
       base::Bind(&FileChooserResource::OnPluginMsgShowReply, this));
   return PP_OK_COMPLETIONPENDING;
 }
 
 }  // namespace proxy
 }  // namespace ppapi