Split off CPDF_Document into its own .cpp/.h files.

core/src/fpdfdoc/doc_annot.cpp

 // Copyright 2014 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/include/fpdfapi/cpdf_document.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfdoc/fpdf_doc.h"
 
 CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
     : m_pDocument(pPage->m_pDocument) {
   if (!pPage->m_pFormDict)
     return;
 
   CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayBy("Annots");
   if (!pAnnots)
@@ skipping 321 matching lines @@
   CFX_PathData path;
   width /= 2;
   path.AppendRect(rect.left + width, rect.bottom + width, rect.right - width,
                   rect.top - width);
   int fill_type = 0;
   if (pOptions && (pOptions->m_Flags & RENDER_NOPATHSMOOTH)) {
     fill_type |= FXFILL_NOPATHSMOOTH;
   }
   pDevice->DrawPath(&path, pUser2Device, &graph_state, argb, argb, fill_type);
 }