Roll PDFium to f33cdd5

pdf/pdfium/pdfium_engine.cc

Index: pdf/pdfium/pdfium_engine.cc
diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc
index e580fede6aba69640b283f2395d9c2b5252c2021..8012dd265ec64b77513df3bbf0443f0e0d8e2835 100644
--- a/pdf/pdfium/pdfium_engine.cc
+++ b/pdf/pdfium/pdfium_engine.cc
@@ -970,8 +970,8 @@ int PDFiumEngine::GetBlock(void* param, unsigned long position,
   return loader->GetBlock(position, size, buffer);
 }
 
-bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,
-                               size_t offset, size_t size) {
+FPDF_BOOL PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,
+                                    size_t offset, size_t size) {
   PDFiumEngine::FileAvail* file_avail =
       static_cast<PDFiumEngine::FileAvail*>(param);
   return file_avail->loader->IsDataAvailable(offset, size);