Cleanup: Remove unneeded base/file_util.h includes in chrome_frame, courgette, ipc, media, and net.

courgette/base_test_unittest.h

 // 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.
 
 #ifndef COURGETTE_BASE_TEST_UNITTEST_H_
 #define COURGETTE_BASE_TEST_UNITTEST_H_
 
 #include <list>
 #include <string>
 
-#include "base/file_util.h"
+#include "base/files/file_path.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class BaseTest : public testing::Test {
  public:
   std::string FileContents(const char* file_name) const;
 
   // Pass a list of strings, and get back the concatenated contents
   // of each of the mentioned files.
   std::string FilesContents(std::list<std::string> file_names) const;
 
  private:
   virtual void SetUp();
   virtual void TearDown();
 
   base::FilePath test_dir_;
 };
 
 #endif  // COURGETTE_BASE_TEST_UNITTEST_H_