Revert of Update SplitString calls to new form

ui/base/ime/input_method_auralinux_unittest.cc

 // Copyright 2015 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 "ui/base/ime/input_method_auralinux.h"
 
 #include "base/memory/singleton.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 69 matching lines @@
   }
 
  protected:
   bool DispatchKeyEvent(const ui::KeyEvent& key_event) override {
     if (!is_sync_mode_) {
       actions_.clear();
       return eat_key_;
     }
 
     for (const auto& action : actions_) {
-      std::vector<base::string16> parts = base::SplitString(
-          action, base::string16(1, ':'), base::TRIM_WHITESPACE,
-          base::SPLIT_WANT_ALL);
+      std::vector<base::string16> parts;
+      base::SplitString(action, L':', &parts);
       base::char16 id = parts[0][0];
       base::string16 param;
       if (parts.size() > 1)
         param = parts[1];
       if (id == kActionCommit) {
         delegate_->OnCommit(param);
       } else if (id == kActionCompositionStart) {
         delegate_->OnPreeditStart();
       } else if (id == kActionCompositionUpdate) {
         CompositionText comp;
@@ skipping 649 matching lines @@
   input_method_auralinux_->DispatchKeyEvent(&key);
 
   test_result_->ExpectAction("textinput:c");
   test_result_->ExpectAction("keydown:65");
   test_result_->ExpectAction("keypress:65");
   test_result_->Verify();
 }
 
 }  // namespace
 }  // namespace ui