Merge the CFWL_*Imp classes into the IFWL_* classes.

core/fpdfapi/page/cpdf_textstate.cpp

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fpdfapi/page/cpdf_textstate.h"
 
+#include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/page/cpdf_docpagedata.h"
-#include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 
 CPDF_TextState::CPDF_TextState() {}
 CPDF_TextState::~CPDF_TextState() {}
 
 void CPDF_TextState::Emplace() {
   m_Ref.Emplace();
 }
 
 CPDF_Font* CPDF_TextState::GetFont() const {
@@ skipping 156 matching lines @@
   switch (mode) {
     case TextRenderingMode::MODE_STROKE:
     case TextRenderingMode::MODE_FILL_STROKE:
     case TextRenderingMode::MODE_STROKE_CLIP:
     case TextRenderingMode::MODE_FILL_STROKE_CLIP:
       return true;
     default:
       return false;
   }
 }