import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/mediasource/MediaSourceUtils.cpp

@@ -0,0 +1,34 @@
+/* -*- mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "MediaSourceUtils.h"
+
+#include "mozilla/Logging.h"
+#include "nsPrintfCString.h"
+
+namespace mozilla {
+
+nsCString
+DumpTimeRanges(const media::TimeIntervals& aRanges)
+{
+  nsCString dump;
+
+  dump = "[";
+
+  for (uint32_t i = 0; i < aRanges.Length(); ++i) {
+    if (i > 0) {
+      dump += ", ";
+    }
+    dump += nsPrintfCString("(%f, %f)",
+                            aRanges.Start(i).ToSeconds(),
+                            aRanges.End(i).ToSeconds());
+  }
+
+  dump += "]";
+
+  return dump;
+}
+
+} // namespace mozilla