Header cleanup in base.

This makes uses of StringPrintf and friends use the base namespace and include
stringprintf.h explicitly. This also removes a bunch of unnecessary string_util
includes (which exposed a few other errors like people forgetting to include
<vector>.

TEST=it compiles
BUG=none

Review URL: http://codereview.chromium.org/3119022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56446 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: f16339329dd06c7bc6fa409af73907253efad8dc
diff --git a/base/file_path_unittest.cc b/base/file_path_unittest.cc
index 48bf23c..6eb106b 100644
--- a/base/file_path_unittest.cc
+++ b/base/file_path_unittest.cc
@@ -1,11 +1,11 @@
-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
-#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
@@ -307,7 +307,7 @@
     // TODO(erikkay): It would be nice to have a unicode test append value to
     // handle the case when AppendASCII is passed UTF8
 #if defined(OS_WIN)
-    std::string ascii = WideToASCII(leaf);
+    std::string ascii = WideToUTF8(leaf);
 #elif defined(OS_POSIX)
     std::string ascii = leaf;
 #endif