Style Change: NULL->nullptr

src/pdf/SkPDFCanon.h

Index: src/pdf/SkPDFCanon.h
diff --git a/src/pdf/SkPDFCanon.h b/src/pdf/SkPDFCanon.h
index 5198e7b0acb36452116e5d6ca69328fe5b62dcdf..2ad5a229aaa7923adf508f4f035bb295ffac4ca7 100644
--- a/src/pdf/SkPDFCanon.h
+++ b/src/pdf/SkPDFCanon.h
@@ -40,9 +40,9 @@ public:
     // reset to original setting, unrefs all objects.
     void reset();
 
-    // Returns exact match if there is one.  If not, it returns NULL.
+    // Returns exact match if there is one.  If not, it returns nullptr.
     // If there is no exact match, but there is a related font, we
-    // still return NULL, but also set *relatedFont.
+    // still return nullptr, but also set *relatedFont.
     SkPDFFont* findFont(uint32_t fontID,
                         uint16_t glyphID,
                         SkPDFFont** relatedFont) const;
@@ -78,7 +78,7 @@ private:
     SkTDArray<SkPDFImageShader*> fImageShaderRecords;
 
     struct WrapGS {
-        explicit WrapGS(const SkPDFGraphicState* ptr = NULL) : fPtr(ptr) {}
+        explicit WrapGS(const SkPDFGraphicState* ptr = nullptr) : fPtr(ptr) {}
         const SkPDFGraphicState* fPtr;
         bool operator==(const WrapGS& rhs) const {
             SkASSERT(fPtr);