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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/gpu/GrBatchFontCache.cpp b/src/gpu/GrBatchFontCache.cpp
index e8c2183..de8047b 100644
--- a/src/gpu/GrBatchFontCache.cpp
+++ b/src/gpu/GrBatchFontCache.cpp
@@ -40,9 +40,9 @@
 
 GrBatchFontCache::GrBatchFontCache(GrContext* context)
     : fContext(context)
-    , fPreserveStrike(NULL) {
+    , fPreserveStrike(nullptr) {
     for (int i = 0; i < kMaskFormatCount; ++i) {
-        fAtlases[i] = NULL;
+        fAtlases[i] = nullptr;
     }
 
     // setup default atlas configs
@@ -84,7 +84,7 @@
     fCache.rewind();
     for (int i = 0; i < kMaskFormatCount; ++i) {
         delete fAtlases[i];
-        fAtlases[i] = NULL;
+        fAtlases[i] = nullptr;
     }
 }
 
@@ -131,7 +131,7 @@
     for (int i = 0; i < kMaskFormatCount; i++) {
         if (fAtlases[i]) {
             delete fAtlases[i];
-            fAtlases[i] = NULL;
+            fAtlases[i] = nullptr;
         }
     }
     memcpy(fAtlasConfigs, configs, sizeof(fAtlasConfigs));
@@ -169,11 +169,11 @@
     SkIRect bounds;
     if (GrGlyph::kDistance_MaskStyle == GrGlyph::UnpackMaskStyle(packed)) {
         if (!scaler->getPackedGlyphDFBounds(skGlyph, &bounds)) {
-            return NULL;
+            return nullptr;
         }
     } else {
         if (!scaler->getPackedGlyphBounds(skGlyph, &bounds)) {
-            return NULL;
+            return nullptr;
         }
     }
     GrMaskFormat format = scaler->getPackedGlyphMaskFormat(skGlyph);