Reland "Update includes for webrtc/{base => rtc_base} rename (3/3)"

webrtc/rtc_base/stringutils.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/base/checks.h"
-#include "webrtc/base/stringutils.h"
+#include "webrtc/rtc_base/stringutils.h"
+#include "webrtc/rtc_base/checks.h"
 
 namespace rtc {
 
 bool memory_check(const void* memory, int c, size_t count) {
   const char* char_memory = static_cast<const char*>(memory);
   char char_c = static_cast<char>(c);
   for (size_t i = 0; i < count; ++i) {
     if (char_memory[i] != char_c) {
       return false;
     }
@@ skipping 101 matching lines @@
   std::string::size_type last  = s.find_last_not_of(kWhitespace);
 
   if (first == std::string::npos || last == std::string::npos) {
     return std::string("");
   }
 
   return s.substr(first, last - first + 1);
 }
 
 }  // namespace rtc