Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
diff --git a/samplecode/SampleDraw.cpp b/samplecode/SampleDraw.cpp
index 616650f..5e239c6 100644
--- a/samplecode/SampleDraw.cpp
+++ b/samplecode/SampleDraw.cpp
@@ -22,7 +22,7 @@
 
     c.clipRect(rect);
 
-    c.saveLayer(NULL, NULL);
+    c.saveLayer(nullptr, nullptr);
     rect = SkRect::MakeXYWH(50, 10, 40, 80);
     c.clipRect(rect, SkRegion::kUnion_Op);
 
@@ -262,7 +262,7 @@
     SkTDArray<Draw*> fList;
 
 public:
-    DrawView() : fDraw(NULL) {
+    DrawView() : fDraw(nullptr) {
         fFactory = new RectFactory;
     }
 
@@ -289,7 +289,7 @@
                 return *iter;
             }
         }
-        return NULL;
+        return nullptr;
     }
 
 protected:
@@ -344,7 +344,7 @@
                 } else {
                     fDraw->unref();
                 }
-                fDraw = NULL;
+                fDraw = nullptr;
             }
             return true;
         }
@@ -365,7 +365,7 @@
                 }
             }
         }
-        this->inval(NULL);
+        this->inval(nullptr);
         return true;
     }