Use a direct include of strings headers in chrome/browser/ui/a*/.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_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 "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/launcher/launcher.h"
 #include "ash/launcher/launcher_model.h"
 #include "ash/shell.h"
 #include "ash/test/launcher_view_test_api.h"
 #include "ash/test/shell_test_api.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/automation/automation_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/platform_app_browsertest_util.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
@@ skipping 817 matching lines @@
   EXPECT_TRUE(launcher_->IsShowingOverflowBubble());
 
   // Unpin first pinned app and there should be no crash.
   ChromeLauncherController* controller =
       static_cast<ChromeLauncherController*>(launcher_->delegate());
   controller->UnpinAppsWithID(std::string("fake_app_0"));
 
   test.RunMessageLoopUntilAnimationsDone();
   EXPECT_FALSE(launcher_->IsShowingOverflowBubble());
 }