Revert of Update SplitString calls to new form

extensions/common/url_pattern.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 "extensions/common/url_pattern.h"
 
 #include <ostream>
 
 #include "base/strings/pattern.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 219 matching lines @@
     // Host is required.
     if (host_start_pos == host_end_pos)
       return PARSE_ERROR_EMPTY_HOST;
 
     if (host_end_pos == std::string::npos)
       return PARSE_ERROR_EMPTY_PATH;
 
     host_ = pattern.substr(host_start_pos, host_end_pos - host_start_pos);
 
     // The first component can optionally be '*' to match all subdomains.
-    std::vector<std::string> host_components = base::SplitString(
-        host_, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
+    std::vector<std::string> host_components;
+    base::SplitString(host_, '.', &host_components);
 
     // Could be empty if the host only consists of whitespace characters.
-    if (host_components.empty() ||
-        (host_components.size() == 1 && host_components[0].empty()))
+    if (host_components.empty())
       return PARSE_ERROR_EMPTY_HOST;
 
     if (host_components[0] == "*") {
       match_subdomains_ = true;
       host_components.erase(host_components.begin(),
                             host_components.begin() + 1);
     }
     host_ = base::JoinString(host_components, ".");
 
     path_start_pos = host_end_pos;
@@ skipping 351 matching lines @@
   }
 
   return result;
 }
 
 // static
 const char* URLPattern::GetParseResultString(
     URLPattern::ParseResult parse_result) {
   return kParseResultMessages[parse_result];
 }