[LayoutNG] Change core/layout/ng to Chromium style and rename files.

third_party/WebKit/Source/core/layout/ng/ng_text.cc

 // 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/NGText.h"
+#include "core/layout/ng/ng_text.h"
 
 namespace blink {
 
 NGText::NGText(LayoutUnit inlineSize, LayoutUnit blockSize)
-    : m_inlineSize(inlineSize)
-    , m_blockSize(blockSize)
-{
+    : m_inlineSize(inlineSize), m_blockSize(blockSize) {}
+
+void NGText::setOffset(LayoutUnit inlineOffset, LayoutUnit blockOffset) {
+  m_inlineOffset = inlineOffset;
+  m_blockOffset = blockOffset;
 }
 
-void NGText::setOffset(LayoutUnit inlineOffset, LayoutUnit blockOffset)
-{
-    m_inlineOffset = inlineOffset;
-    m_blockOffset = blockOffset;
-}
-
-} // namespace blink
+}  // namespace blink