Update SplitString calls to new form

ash/display/display_manager.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 "ash/display/display_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <set>
 #include <string>
@@ skipping 153 matching lines @@
 #endif
 }
 
 bool DisplayManager::InitFromCommandLine() {
   DisplayInfoList info_list;
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (!command_line->HasSwitch(switches::kAshHostWindowBounds))
     return false;
   const string size_str =
       command_line->GetSwitchValueASCII(switches::kAshHostWindowBounds);
-  vector<string> parts;
-  base::SplitString(size_str, ',', &parts);
-  for (vector<string>::const_iterator iter = parts.begin();
-       iter != parts.end(); ++iter) {
-    info_list.push_back(DisplayInfo::CreateFromSpec(*iter));
+  for (const std::string& part : base::SplitString(
+           size_str, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
+    info_list.push_back(DisplayInfo::CreateFromSpec(part));
     info_list.back().set_native(true);
   }
   MaybeInitInternalDisplay(&info_list[0]);
   if (info_list.size() > 1 &&
       command_line->HasSwitch(switches::kAshEnableSoftwareMirroring)) {
     SetMultiDisplayMode(MIRRORING);
   }
   OnNativeDisplaysChanged(info_list);
   return true;
 }
@@ skipping 1212 matching lines @@
       gfx::Rect(new_secondary_origin, secondary_bounds.size()));
   secondary_display->UpdateWorkAreaFromInsets(insets);
 }
 
 void DisplayManager::RunPendingTasksForTest() {
   if (!software_mirroring_display_list_.empty())
     base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace ash