[LayoutNG] Add NGFragment class definition.

third_party/WebKit/Source/core/layout/ng/NGFragment.cpp

Index: third_party/WebKit/Source/core/layout/ng/NGFragment.cpp
diff --git a/third_party/WebKit/Source/core/layout/ng/NGFragment.cpp b/third_party/WebKit/Source/core/layout/ng/NGFragment.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..22d1d017e23539586331806e854c1d1ef0becf12
--- /dev/null
+++ b/third_party/WebKit/Source/core/layout/ng/NGFragment.cpp
@@ -0,0 +1,21 @@
+// 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 "core/layout/ng/NGFragment.h"
+
+namespace blink {
+
+NGFragment::NGFragment(LayoutUnit inlineSize, LayoutUnit blockSize)
+    : m_inlineSize(inlineSize)
+    , m_blockSize(blockSize)
+{
+}
+
+void NGFragment::setOffset(LayoutUnit inlineOffset, LayoutUnit blockOffset)
+{
+    m_inlineOffset = inlineOffset;
+    m_blockOffset = blockOffset;
+}
+
+} // namespace blink