Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/testing/file.cc

Index: third_party/protobuf/src/google/protobuf/testing/file.cc
diff --git a/third_party/protobuf/src/google/protobuf/testing/file.cc b/third_party/protobuf/src/google/protobuf/testing/file.cc
index 3d07b1276cf96698f95b367d65999de5e6eb2362..e224781db572fc19e1a90a99c7201c243077e588 100644
--- a/third_party/protobuf/src/google/protobuf/testing/file.cc
+++ b/third_party/protobuf/src/google/protobuf/testing/file.cc
@@ -1,6 +1,6 @@
 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+// http://code.google.com/p/protobuf/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -82,24 +82,6 @@ void File::ReadFileToStringOrDie(const string& name, string* output) {
   GOOGLE_CHECK(ReadFileToString(name, output)) << "Could not read: " << name;
 }
 
-bool File::WriteStringToFile(const string& contents, const string& name) {
-  FILE* file = fopen(name.c_str(), "wb");
-  if (file == NULL) {
-    GOOGLE_LOG(ERROR) << "fopen(" << name << ", \"wb\"): " << strerror(errno);
-    return false;
-  }
-
-  if (fwrite(contents.data(), 1, contents.size(), file) != contents.size()) {
-    GOOGLE_LOG(ERROR) << "fwrite(" << name << "): " << strerror(errno);
-    return false;
-  }
-
-  if (fclose(file) != 0) {
-    return false;
-  }
-  return true;
-}
-
 void File::WriteStringToFileOrDie(const string& contents, const string& name) {
   FILE* file = fopen(name.c_str(), "wb");
   GOOGLE_CHECK(file != NULL)
@@ -133,8 +115,6 @@ bool File::RecursivelyCreateDir(const string& path, int mode) {
 
 void File::DeleteRecursively(const string& name,
                              void* dummy1, void* dummy2) {
-  if (name.empty()) return;
-
   // We don't care too much about error checking here since this is only used
   // in tests to delete temporary directories that are under /tmp anyway.
 
@@ -192,9 +172,5 @@ void File::DeleteRecursively(const string& name,
 #endif
 }
 
-bool File::ChangeWorkingDirectory(const string& new_working_directory) {
-  return chdir(new_working_directory.c_str()) == 0;
-}
-
 }  // namespace protobuf
 }  // namespace google