Add bitmaps and skp output to Skia port

public/fpdf_formfill.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 PUBLIC_FPDF_FORMFILL_H_
 #define PUBLIC_FPDF_FORMFILL_H_
 
 #include "fpdfview.h"
@@ skipping 1482 matching lines @@
 *           This method is designed to only render annotations and FormFields on
 *the page.
 *           Without FPDF_ANNOT specified for flags, Rendering functions such as
 *FPDF_RenderPageBitmap or FPDF_RenderPageBitmap_Start will only render page
 *contents(without annotations) to a bitmap.
 *           In order to implement the FormFill functions,Implementation should
 *call this method after rendering functions finish rendering the page contents.
 **/
 DLLEXPORT void STDCALL FPDF_FFLDraw(FPDF_FORMHANDLE hHandle,
                                     FPDF_BITMAP bitmap,
+                                    void* recorder,

[dsinclair, 2016/03/10 14:38:54]

Can't modify this as it's public API.

If we add a second method for this, we should probably add a FPDF_RECORDER
typedef to be consistent with BITMAP and FORMHANDLE.

[caryclark, 2016/03/10 20:44:55]

Done.

                                     FPDF_PAGE page,
                                     int start_x,
                                     int start_y,
                                     int size_x,
                                     int size_y,
                                     int rotate,
                                     int flags);
 
 #ifdef PDF_ENABLE_XFA
 /**
@@ skipping 208 matching lines @@
 FPDF_StringHandleAddString(FPDF_STRINGHANDLE stringHandle,
                            FPDF_BYTESTRING bsText,
                            FPDF_DWORD size);
 #endif  // PDF_ENABLE_XFA
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // PUBLIC_FPDF_FORMFILL_H_