PDF: Now threadsafe!

src/pdf/SkPDFImage.cpp

Index: src/pdf/SkPDFImage.cpp
diff --git a/src/pdf/SkPDFImage.cpp b/src/pdf/SkPDFImage.cpp
index 6f743fd16216cf19a26fbc94feccdeb0b8b6813f..027028147663683ba5dcd3264f85788fe7297198 100644
--- a/src/pdf/SkPDFImage.cpp
+++ b/src/pdf/SkPDFImage.cpp
@@ -717,11 +717,11 @@ static bool is_jfif_jpeg(SkData* data) {
 }  // namespace
 #endif
 
-SkPDFObject* SkPDFCreateImageObject(
-        const SkBitmap& bitmap,
-        const SkIRect& subset,
-        SkPicture::EncodeBitmap encoder) {
-    if (SkPDFObject* pdfBitmap = SkPDFBitmap::Create(bitmap, subset)) {
+SkPDFObject* SkPDFCreateImageObject(SkPDFCanon* canon,
+                                    const SkBitmap& bitmap,
+                                    const SkIRect& subset,
+                                    SkPicture::EncodeBitmap encoder) {
+    if (SkPDFObject* pdfBitmap = SkPDFBitmap::Create(canon, bitmap, subset)) {
         return pdfBitmap;
     }
 #if 0  // reenable when we can figure out the JPEG colorspace