Style Change: NULL->nullptr

gm/giantbitmap.cpp

Index: gm/giantbitmap.cpp
diff --git a/gm/giantbitmap.cpp b/gm/giantbitmap.cpp
index e8bfad49900216842c9e7644066ed3a85372d060..571dbd811421b49804f059978fc051913f257859 100644
--- a/gm/giantbitmap.cpp
+++ b/gm/giantbitmap.cpp
@@ -25,7 +25,7 @@ class GiantBitmapGM : public skiagm::GM {
     bool fDoRotate;
 
     const SkBitmap& getBitmap() {
-        if (NULL == fBM) {
+        if (nullptr == fBM) {
             fBM = new SkBitmap;
             fBM->allocN32Pixels(W, H);
             fBM->eraseColor(SK_ColorWHITE);
@@ -60,7 +60,7 @@ class GiantBitmapGM : public skiagm::GM {
     }
 
 public:
-    GiantBitmapGM(SkShader::TileMode mode, bool doFilter, bool doRotate) : fBM(NULL) {
+    GiantBitmapGM(SkShader::TileMode mode, bool doFilter, bool doRotate) : fBM(nullptr) {
         fMode = mode;
         fDoFilter = doFilter;
         fDoRotate = doRotate;