Disable exceptions for the pdfium targets, now that pdfium:29 is done.
Disable exceptions for the pdfium targets, now that pdfium:29 is done.

BUG=pdfium:29
R=scottmg@chromium.org

Review URL: https://codereview.chromium.org/470503004

rouault/pdfium,chenjian-rits/HelloWorld,Gottox/pdfium,andoma/pdfium,andoma/pdfium,shifucun/pdfium,azunite/libpdfium,wwxxyx/pdfium0,azunite/pdf_clone,ttyangf/PDFium-,shifucun/pdfium,azunite/pdf_clone,azunite/libpdfium,rouault/pdfium,andoma/pdfium,aschepis/pdfium,PDFium/PDFium,shifucun/pdfium,csharpengineer/pdfium-code,bradh/pdfium,was4444/pdfium,DrAlexx/pdfium,nathanstitt/pdfium,duanhjlt/pdfium,PDFium/PDFium,ttyangf/PDFium-,duanhjlt/pdfium,csharpengineer/pdfium-code,aschepis/pdfium,azunite/libpdfium,nathanstitt/pdfium,duanhjlt/pdfium,pwaller/pdfium,wwxxyx/pdfium0,witwall/pdfium,andoma/pdfium,was4444/pdfium,ttyangf/PDFium-,PDFium/PDFium,csharpengineer/pdfium-code,DrAlexx/pdfium,wwxxyx/pdfium0,duanhjlt/pdfium,witwall/pdfium,azunite/pdfium_ch,pwaller/pdfium,bradh/pdfium,klokantech/pdfium,Gottox/pdfium,witwall/pdfium,klokantech/pdfium,azunite/pdfium_ch,azunite/pdf_clone,chenjian-rits/HelloWorld,aschepis/pdfium,was4444/pdfium,azunite/libpdfium,Gottox/pdfium,DrAlexx/pdfium,nathanstitt/pdfium,bradh/pdfium,klokantech/pdfium,DrAlexx/pdfium,pwaller/pdfium,rouault/pdfium,was4444/pdfium,azunite/pdfium_ch,chenjian-rits/HelloWorld