Cleanup forward declarations.

core/include/fpdfapi/fpdf_page.h

 // 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
 
 #ifndef CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
 
 #include <list>
 #include <memory>
 
 #include "core/include/fpdfapi/fpdf_parser.h"
 #include "core/include/fpdfapi/fpdf_resource.h"
 #include "core/include/fxge/fx_dib.h"
 
 class CPDF_Page;
 class CPDF_Form;
 class CPDF_ParseOptions;
 class CPDF_PageObject;
 class CPDF_PageRenderCache;
-class CPDF_StreamFilter;
 class CPDF_AllStates;
 class CPDF_ContentParser;
-class CPDF_StreamContentParser;
+class CPDF_ImageObject;
 
 #define PDFTRANS_GROUP 0x0100
 #define PDFTRANS_ISOLATED 0x0200
 #define PDFTRANS_KNOCKOUT 0x0400
 
 class CPDF_PageObjectList : public std::list<std::unique_ptr<CPDF_PageObject>> {
  public:
   // Linear complexity, to be avoided except as needed by public APIs.
   CPDF_PageObject* GetPageObjectByIndex(int index);
 };
@@ skipping 126 matching lines @@
                    CFX_Matrix& matrix);
   CFX_ByteString RealizeResource(CPDF_Object* pResourceObj,
                                  const FX_CHAR* szType);
 
   CPDF_Page* m_pPage;
   CPDF_Document* m_pDocument;
   CFX_ArrayTemplate<CPDF_PageObject*> m_pageObjects;
 };
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_