Add bitmaps and skp output to Skia port

public/fpdfview.h

Index: public/fpdfview.h
diff --git a/public/fpdfview.h b/public/fpdfview.h
index 68d0b1ad83f765519d9886ed1b84998f68769f7f..dad6299da5e6d6da896134e602770728bb38112b 100644
--- a/public/fpdfview.h
+++ b/public/fpdfview.h
@@ -37,6 +37,7 @@ typedef void* FPDF_PAGELINK;
 typedef void* FPDF_PAGEOBJECT;  // Page object(text, path, etc)
 typedef void* FPDF_PAGERANGE;
 typedef void* FPDF_PATH;
+typedef void* FPDF_RECORDER;
 typedef void* FPDF_SCHHANDLE;
 typedef void* FPDF_TEXTPAGE;
 
@@ -582,6 +583,12 @@ DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap,
                                              int rotate,
                                              int flags);
 
+#ifdef _SKIA_SUPPORT_
+DLLEXPORT FPDF_RECORDER STDCALL FPDF_RenderPageSkp(FPDF_PAGE page,
+                                                   int size_x,
+                                                   int size_y);
+#endif
+
 // Function: FPDF_ClosePage
 //          Close a loaded PDF page.
 // Parameters: