Use a direct include of strings headers in ui/, part 3.

ui/views/examples/example_base.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 "ui/views/examples/example_base.h"
 
 #include <stdarg.h>
 
 #include "base/compiler_specific.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "ui/views/view.h"
 
 namespace views {
 namespace examples {
 
 // Logs the specified string to the status area of the examples window.
 // This function can only be called if there is a visible examples window.
 void LogStatus(const std::string& status);
 
 namespace {
@@ skipping 39 matching lines @@
 void ExampleBase::PrintStatus(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   std::string msg;
   base::StringAppendV(&msg, format, ap);
   LogStatus(msg);
 }
 
 }  // namespace examples
 }  // namespace views