Delete unused features of rtc::FilesystemInterface.

webrtc/base/unixfilesystem.cc

Index: webrtc/base/unixfilesystem.cc
diff --git a/webrtc/base/unixfilesystem.cc b/webrtc/base/unixfilesystem.cc
index a756ae515e21f0bddfc172e8117952b42cab6dde..9f865e68cab4567fa53c6aec4df716d44db84d93 100644
--- a/webrtc/base/unixfilesystem.cc
+++ b/webrtc/base/unixfilesystem.cc
@@ -132,22 +132,6 @@ FileStream *UnixFilesystem::OpenFile(const Pathname &filename,
   return fs;
 }
 
-bool UnixFilesystem::CreatePrivateFile(const Pathname &filename) {
-  int fd = open(filename.pathname().c_str(),
-                O_RDWR | O_CREAT | O_EXCL,
-                S_IRUSR | S_IWUSR);
-  if (fd < 0) {
-    LOG_ERR(LS_ERROR) << "open() failed.";
-    return false;
-  }
-  // Don't need to keep the file descriptor.
-  if (close(fd) < 0) {
-    LOG_ERR(LS_ERROR) << "close() failed.";
-    // Continue.
-  }
-  return true;
-}
-
 bool UnixFilesystem::DeleteFile(const Pathname &filename) {
   LOG(LS_INFO) << "Deleting file:" << filename.pathname();
 
@@ -229,25 +213,6 @@ bool UnixFilesystem::MoveFile(const Pathname &old_path,
   return true;
 }
 
-bool UnixFilesystem::MoveFolder(const Pathname &old_path,
-                                const Pathname &new_path) {
-  if (!IsFolder(old_path)) {
-    ASSERT(IsFolder(old_path));
-    return false;
-  }
-  LOG(LS_VERBOSE) << "Moving " << old_path.pathname()
-                  << " to " << new_path.pathname();
-  if (rename(old_path.pathname().c_str(), new_path.pathname().c_str()) != 0) {
-    if (errno != EXDEV)
-      return false;
-    if (!CopyFolder(old_path, new_path))
-      return false;
-    if (!DeleteFolderAndContents(old_path))
-      return false;
-  }
-  return true;
-}
-
 bool UnixFilesystem::IsFolder(const Pathname &path) {
   struct stat st;
   if (stat(path.pathname().c_str(), &st) < 0)
@@ -347,23 +312,6 @@ bool UnixFilesystem::GetFileTime(const Pathname& path, FileTimeType which,
   return true;
 }
 
-bool UnixFilesystem::GetAppPathname(Pathname* path) {
-#if defined(__native_client__)
-  return false;
-#elif defined(WEBRTC_MAC)
-  AppleAppName(path);
-  return true;
-#else  // WEBRTC_MAC && !defined(WEBRTC_IOS)
-  char buffer[PATH_MAX + 2];
-  ssize_t len = readlink("/proc/self/exe", buffer, arraysize(buffer) - 1);
-  if ((len <= 0) || (len == PATH_MAX + 1))
-    return false;
-  buffer[len] = '\0';
-  path->SetPathname(buffer);
-  return true;
-#endif  // WEBRTC_MAC && !defined(WEBRTC_IOS)
-}
-
 bool UnixFilesystem::GetAppDataFolder(Pathname* path, bool per_user) {
   // On macOS and iOS, there is no requirement that the path contains the
   // organization.
@@ -503,20 +451,6 @@ bool UnixFilesystem::GetDiskFreeSpace(const Pathname& path,
 #endif  // !__native_client__
 }
 
-Pathname UnixFilesystem::GetCurrentDirectory() {
-  Pathname cwd;
-  char buffer[PATH_MAX];
-  char *path = getcwd(buffer, PATH_MAX);
-
-  if (!path) {
-    LOG_ERR(LS_ERROR) << "getcwd() failed";
-    return cwd;  // returns empty pathname
-  }
-  cwd.SetFolder(std::string(path));
-
-  return cwd;
-}
-
 char* UnixFilesystem::CopyString(const std::string& str) {
   size_t size = str.length() + 1;