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

chrome/test/base/v8_unit_test.cc

 // Copyright (c) 2011 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/test/base/v8_unit_test.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_piece.h"
+#include "base/strings/stringprintf.h"
 #include "chrome/common/chrome_paths.h"
 
 namespace {
 
 // |args| are passed through the various JavaScript logging functions such as
 // console.log. Returns a string appropriate for logging with LOG(severity).
 std::string LogArgs2String(const v8::Arguments& args) {
   std::string message;
   bool first = true;
   for (int i = 0; i < args.Length(); i++) {
@@ skipping 254 matching lines @@
   EXPECT_EQ(2U, testResult->Length());
   if (::testing::Test::HasNonfatalFailure())
     return v8::Undefined();
   testResult_ok = testResult->Get(0)->BooleanValue();
   if (!testResult_ok) {
     v8::String::Utf8Value message(testResult->Get(1));
     LOG(ERROR) << *message;
   }
   return v8::Undefined();
 }