base: Move SplitStringDontTrim functions from string_util.h to string_split.h

chrome/plugin/chrome_plugin_host.cc

Index: chrome/plugin/chrome_plugin_host.cc
diff --git a/chrome/plugin/chrome_plugin_host.cc b/chrome/plugin/chrome_plugin_host.cc
index 74fd341ad39fbfd28aff852f24dfc3d1729be8a5..a3f66d4717d17ec5e1cca4b81e3bd8adfe4ff301 100644
--- a/chrome/plugin/chrome_plugin_host.cc
+++ b/chrome/plugin/chrome_plugin_host.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -9,6 +9,7 @@
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
+#include "base/string_split.h"
 #include "chrome/common/child_process.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_plugin_lib.h"
@@ -383,7 +384,7 @@ CPError STDCALL CPB_AllowFileDrop(
 
   static const char kDelimiter('\b');
   std::vector<std::string> files;
-  SplitStringDontTrim(file_drag_data, kDelimiter, &files);
+  base::SplitStringDontTrim(file_drag_data, kDelimiter, &files);
 
   bool allowed = false;
   if (!PluginThread::current()->Send(