Use a direct include of strings headers in testing/, third_party/, tools/.

testing/android/native_test_launcher.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.
 
 // This class sets up the environment for running the native tests inside an
 // android application. It outputs (to a fifo) markers identifying the
 // START/PASSED/CRASH of the test suite, FAILURE/SUCCESS of individual tests,
 // etc.
 // These markers are read by the test runner script to generate test results.
 // It installs signal handlers to detect crashes.
 
 #include <android/log.h>
 #include <signal.h>
 
 #include "base/android/base_jni_registrar.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 #include "testing/android/native_test_util.h"
 #include "testing/jni/ChromeNativeTestActivity_jni.h"
 
 using testing::native_test_util::ArgsToArgv;
 using testing::native_test_util::CreateFIFO;
 using testing::native_test_util::ParseArgsFromCommandLineFile;
 using testing::native_test_util::RedirectStream;
 using testing::native_test_util::ScopedMainEntryLogger;
 
@@ skipping 124 matching lines @@
   InstallHandlers();
 
   base::android::InitVM(vm);
   JNIEnv* env = base::android::AttachCurrentThread();
   if (!RegisterNativesImpl(env)) {
     return -1;
   }
 
   return JNI_VERSION_1_4;
 }