Use a direct include of strings headers in chrome/test/.

chrome/test/gpu/gpu_feature_browsertest.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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/version.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/test_launcher_utils.h"
 #include "chrome/test/base/tracing.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/gpu_data_manager.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "gpu/config/gpu_feature_type.h"
 #include "gpu/config/gpu_info.h"
 #include "gpu/config/gpu_test_config.h"
 #include "net/base/net_util.h"
+#include "ui/compositor/compositor_setup.h"
 #include "ui/gl/gl_switches.h"
-#include "ui/compositor/compositor_setup.h"
 #if defined(OS_MACOSX)
 #include "ui/surface/io_surface_support_mac.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 
 using content::GpuDataManager;
 using gpu::GpuFeatureType;
@@ skipping 512 matching lines @@
           base::StringPrintf(
               "%d (resize offset %d): IOSurface width %d -> %d; Creates %d "
               "Expected %d", offset_i, offsets[offset_i],
               old_width, new_width, num_creates, expected_creates);
     }
   }
 }
 #endif
 
 }  // namespace anonymous