Rename isolated_output to test_output and add a method to get the test_output directory.

webrtc/test/testsupport/isolated_output.cc

Index: webrtc/test/testsupport/isolated_output.cc
diff --git a/webrtc/test/testsupport/isolated_output.cc b/webrtc/test/testsupport/isolated_output.cc
deleted file mode 100644
index 5324900efcd37fd722ad0a907ced1c7de9a849ac..0000000000000000000000000000000000000000
--- a/webrtc/test/testsupport/isolated_output.cc
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/test/testsupport/isolated_output.h"
-
-#include <string.h>
-
-#include "gflags/gflags.h"
-#include "webrtc/rtc_base/file.h"
-#include "webrtc/rtc_base/logging.h"
-#include "webrtc/rtc_base/pathutils.h"
-#include "webrtc/test/testsupport/fileutils.h"
-
-DEFINE_string(isolated_out_dir, webrtc::test::OutputPath(),
-    "The isolated output folder provided by swarming test framework.");
-
-namespace webrtc {
-namespace test {
-
-bool WriteIsolatedOutput(const char* filename,
-                         const uint8_t* buffer,
-                         size_t length) {
-  if (FLAGS_isolated_out_dir.empty()) {
-    LOG(LS_WARNING) << "No isolated_out_dir defined.";
-    return false;
-  }
-
-  if (filename == nullptr || strlen(filename) == 0) {
-    LOG(LS_WARNING) << "filename must be provided.";
-    return false;
-  }
-
-  rtc::File output =
-      rtc::File::Create(rtc::Pathname(FLAGS_isolated_out_dir, filename));
-
-  return output.IsOpen() && output.Write(buffer, length) == length;
-}
-
-bool WriteIsolatedOutput(const char* filename, const std::string& content) {
-  return WriteIsolatedOutput(filename,
-                             reinterpret_cast<const uint8_t*>(content.c_str()),
-                             content.length());
-}
-
-}  // namespace test
-}  // namespace webrtc