Introduce PlatformNotification structures and converters

third_party/WebKit/Source/platform/PlatformNotification.cpp

Index: third_party/WebKit/Source/platform/PlatformNotification.cpp
diff --git a/third_party/WebKit/Source/platform/PlatformNotification.cpp b/third_party/WebKit/Source/platform/PlatformNotification.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3e390a26c122e7b16000ba66aedf3b3c020ab076
--- /dev/null
+++ b/third_party/WebKit/Source/platform/PlatformNotification.cpp
@@ -0,0 +1,24 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "platform/PlatformNotification.h"
+
+#include "wtf/CurrentTime.h"
+
+namespace blink {
+
+PlatformNotification::PlatformNotification()
+    : direction(Direction::LEFT_TO_RIGHT)
+    , timestamp(currentTimeMS())
+    , renotify(false)
+    , silent(false)
+    , requireInteraction(false)
+{
+}
+
+PlatformNotification::~PlatformNotification()
+{
+}
+
+} // namespace blink