* Revert "Por rt flush_cache tool."

chrome/test/test_file_util.h

Index: chrome/test/test_file_util.h
diff --git a/chrome/test/test_file_util.h b/chrome/test/test_file_util.h
index bf415a1c52c65ac2db9eaf8b882cc9b96fa84d98..dd4e34f362cfc5bb24e0f3cbc463f0c4fc6de2f5 100644
--- a/chrome/test/test_file_util.h
+++ b/chrome/test/test_file_util.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_TEST_TEST_FILE_UTIL_H_
-#define CHROME_TEST_TEST_FILE_UTIL_H_
+#ifndef CHROME_TEST_TEST_FILE_UTIL_H__
+#define CHROME_TEST_TEST_FILE_UTIL_H__
 
 // File utility functions used only by tests.
 
@@ -11,6 +11,11 @@
 
 namespace file_util {
 
+// Clear a specific file from the system cache using a neat trick. After this
+// call, trying to access this file will result in a cold load from the hard
+// drive.
+bool EvictFileFromSystemCache(const wchar_t* file);
+
 // Like CopyFileNoCache but recursively copies all files and subdirectories
 // in the given input directory to the output directory. Any files in the
 // destination that already exist will be overwritten.
@@ -22,5 +27,5 @@ bool CopyRecursiveDirNoCache(const std::wstring& source_dir,
 
 }  // namespace file_util
 
-#endif  // CHROME_TEST_TEST_FILE_UTIL_H_
+#endif  // CHROME_TEST_TEST_FILE_UTIL_H__