* Revert "Por rt flush_cache tool."

base/file_util_win.cc

Index: base/file_util_win.cc
diff --git a/base/file_util_win.cc b/base/file_util_win.cc
index 5f75544cbd128fba1012c4be64dc2ca4a4c982ce..355bdfda9d5ea499318cc569ff25dcd77084fd33 100644
--- a/base/file_util_win.cc
+++ b/base/file_util_win.cc
@@ -692,45 +692,4 @@ std::wstring FileEnumerator::Next() {
   return (file_type_ & FileEnumerator::FILES) ? cur_file : Next();
 }
 
-bool EvictFileFromSystemCache(const FilePath path) {
-  // Overwrite it with no buffering.
-  ScopedHandle file(CreateFile(path.value().c_str(),
-                               GENERIC_READ | GENERIC_WRITE,
-                               FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
-                               OPEN_EXISTING, FILE_FLAG_NO_BUFFERING, NULL));
-  if (!file.IsValid())
-    return false;
-
-  // Execute in chunks. It could be optimized. We want to do few of these since
-  // these operations will be slow without the cache.
-  char buffer[128 * 1024];
-  int total_bytes = 0;
-  DWORD bytes_read;
-  for (;;) {
-    if (!ReadFile(file, buffer, sizeof(buffer), &bytes_read, NULL))
-      return false;
-    if (bytes_read == 0)
-      break;
-
-    bool final = false;
-    if (bytes_read < sizeof(buffer))
-      final = true;
-
-    DWORD to_write = final ? sizeof(buffer) : bytes_read;
-
-    DWORD actual;
-    SetFilePointer(file, total_bytes, 0, FILE_BEGIN);
-    if (!WriteFile(file, buffer, to_write, &actual, NULL))
-      return false;
-    total_bytes += bytes_read;
-
-    if (final) {
-      SetFilePointer(file, total_bytes, 0, FILE_BEGIN);
-      SetEndOfFile(file);
-      break;
-    }
-  }
-  return true;
-}
-
 }  // namespace file_util