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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/utils/SkLua.cpp b/src/utils/SkLua.cpp
index e5d4c2b..307e5f6 100644
--- a/src/utils/SkLua.cpp
+++ b/src/utils/SkLua.cpp
@@ -502,13 +502,13 @@
             return paint;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 static int lcanvas_drawImage(lua_State* L) {
     SkCanvas* canvas = get_ref<SkCanvas>(L, 1);
     SkImage* image = get_ref<SkImage>(L, 2);
-    if (NULL == image) {
+    if (nullptr == image) {
         return 0;
     }
     SkScalar x = lua2scalar(L, 3);
@@ -522,12 +522,12 @@
 static int lcanvas_drawImageRect(lua_State* L) {
     SkCanvas* canvas = get_ref<SkCanvas>(L, 1);
     SkImage* image = get_ref<SkImage>(L, 2);
-    if (NULL == image) {
+    if (nullptr == image) {
         return 0;
     }
 
     SkRect srcR, dstR;
-    SkRect* srcRPtr = NULL;
+    SkRect* srcRPtr = nullptr;
     if (!lua_isnil(L, 3)) {
         srcRPtr = lua2rect(L, 3, &srcR);
     }
@@ -543,8 +543,8 @@
     SkColor colorStorage[4];
     SkPoint texStorage[4];
 
-    const SkColor* colors = NULL;
-    const SkPoint* texs = NULL;
+    const SkColor* colors = nullptr;
+    const SkPoint* texs = nullptr;
 
     getarray_points(L, 2, cubics, 12);
 
@@ -560,7 +560,7 @@
         texs = texStorage;
     }
 
-    get_ref<SkCanvas>(L, 1)->drawPatch(cubics, colors, texs, NULL, *get_obj<SkPaint>(L, 5));
+    get_ref<SkCanvas>(L, 1)->drawPatch(cubics, colors, texs, nullptr, *get_obj<SkPaint>(L, 5));
     return 0;
 }
 
@@ -576,7 +576,7 @@
     SkPicture* picture = get_ref<SkPicture>(L, 2);
     SkScalar x = lua2scalar_def(L, 3, 0);
     SkScalar y = lua2scalar_def(L, 4, 0);
-    SkMatrix matrix, *matrixPtr = NULL;
+    SkMatrix matrix, *matrixPtr = nullptr;
     if (x || y) {
         matrix.setTranslate(x, y);
         matrixPtr = &matrix;
@@ -646,7 +646,7 @@
                                    &genID,
                                    &initialState,
                                    &resultBounds,
-                                   NULL);
+                                   nullptr);
 
     GrReducedClip::ElementList::Iter iter(elements);
     int i = 0;
@@ -671,7 +671,7 @@
 
 static int lcanvas_saveLayer(lua_State* L) {
     SkPaint paint;
-    lua_pushinteger(L, get_ref<SkCanvas>(L, 1)->saveLayer(NULL, lua2OptionalPaint(L, 2, &paint)));
+    lua_pushinteger(L, get_ref<SkCanvas>(L, 1)->saveLayer(nullptr, lua2OptionalPaint(L, 2, &paint)));
     return 1;
 }
 
@@ -710,7 +710,7 @@
     int height = lua2int_def(L, 3, 0);
     SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
     SkSurface* surface = get_ref<SkCanvas>(L, 1)->newSurface(info);
-    if (NULL == surface) {
+    if (nullptr == surface) {
         lua_pushnil(L);
     } else {
         push_ref(L, surface)->unref();
@@ -754,13 +754,13 @@
     { "newSurface", lcanvas_newSurface },
 
     { "__gc", lcanvas_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static int ldocument_beginPage(lua_State* L) {
-    const SkRect* contentPtr = NULL;
+    const SkRect* contentPtr = nullptr;
     push_ref(L, get_ref<SkDocument>(L, 1)->beginPage(lua2scalar(L, 2),
                                                      lua2scalar(L, 3),
                                                      contentPtr));
@@ -787,7 +787,7 @@
     { "endPage", ldocument_endPage },
     { "close", ldocument_close },
     { "__gc", ldocument_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1176,7 +1176,7 @@
     { "setShader", lpaint_setShader },
     { "getPathEffect", lpaint_getPathEffect },
     { "__gc", lpaint_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1260,7 +1260,7 @@
     { "isABitmap",      lshader_isABitmap },
     { "asAGradient",    lshader_asAGradient },
     { "__gc",           lshader_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1289,7 +1289,7 @@
 static const struct luaL_Reg gSkPathEffect_Methods[] = {
     { "asADash",        lpatheffect_asADash },
     { "__gc",           lpatheffect_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1301,7 +1301,7 @@
 
 static const struct luaL_Reg gSkImageFilter_Methods[] = {
     { "__gc",       lpimagefilter_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1390,7 +1390,7 @@
     { "setRectToRect", lmatrix_setRectToRect },
     { "invert", lmatrix_invert },
     { "mapXY", lmatrix_mapXY },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1568,7 +1568,7 @@
     { "cubicTo", lpath_cubicTo },
     { "close", lpath_close },
     { "__gc", lpath_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1620,7 +1620,7 @@
     { "type", lrrect_type },
     { "radii", lrrect_radii },
     { "__gc", lrrect_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1637,7 +1637,7 @@
 
 static int limage_newShader(lua_State* L) {
     SkShader::TileMode tmode = SkShader::kClamp_TileMode;
-    const SkMatrix* localM = NULL;
+    const SkMatrix* localM = nullptr;
     SkAutoTUnref<SkShader> shader(get_ref<SkImage>(L, 1)->newShader(tmode, tmode, localM));
     push_ref(L, shader.get());
     return 1;
@@ -1653,7 +1653,7 @@
     { "height", limage_height },
     { "newShader", limage_newShader },
     { "__gc", limage_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1670,7 +1670,7 @@
 
 static int lsurface_getCanvas(lua_State* L) {
     SkCanvas* canvas = get_ref<SkSurface>(L, 1)->getCanvas();
-    if (NULL == canvas) {
+    if (nullptr == canvas) {
         lua_pushnil(L);
     } else {
         push_ref(L, canvas);
@@ -1685,7 +1685,7 @@
 
 static int lsurface_newImageSnapshot(lua_State* L) {
     SkImage* image = get_ref<SkSurface>(L, 1)->newImageSnapshot();
-    if (NULL == image) {
+    if (nullptr == image) {
         lua_pushnil(L);
     } else {
         push_ref(L, image)->unref();
@@ -1698,7 +1698,7 @@
     int height = lua2int_def(L, 3, 0);
     SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
     SkSurface* surface = get_ref<SkSurface>(L, 1)->newSurface(info);
-    if (NULL == surface) {
+    if (nullptr == surface) {
         lua_pushnil(L);
     } else {
         push_ref(L, surface)->unref();
@@ -1718,7 +1718,7 @@
     { "newImageSnapshot", lsurface_newImageSnapshot },
     { "newSurface", lsurface_newSurface },
     { "__gc", lsurface_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1732,7 +1732,7 @@
     }
 
     SkCanvas* canvas = get_obj<SkPictureRecorder>(L, 1)->beginRecording(w, h);
-    if (NULL == canvas) {
+    if (nullptr == canvas) {
         lua_pushnil(L);
         return 1;
     }
@@ -1743,7 +1743,7 @@
 
 static int lpicturerecorder_getCanvas(lua_State* L) {
     SkCanvas* canvas = get_obj<SkPictureRecorder>(L, 1)->getRecordingCanvas();
-    if (NULL == canvas) {
+    if (nullptr == canvas) {
         lua_pushnil(L);
         return 1;
     }
@@ -1753,7 +1753,7 @@
 
 static int lpicturerecorder_endRecording(lua_State* L) {
     SkPicture* pic = get_obj<SkPictureRecorder>(L, 1)->endRecording();
-    if (NULL == pic) {
+    if (nullptr == pic) {
         lua_pushnil(L);
         return 1;
     }
@@ -1771,7 +1771,7 @@
     { "getCanvas", lpicturerecorder_getCanvas },
     { "endRecording", lpicturerecorder_endRecording },
     { "__gc", lpicturerecorder_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1795,7 +1795,7 @@
     { "width", lpicture_width },
     { "height", lpicture_height },
     { "__gc", lpicture_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1813,7 +1813,7 @@
 static const struct luaL_Reg gSkTextBlob_Methods[] = {
     { "bounds", ltextblob_bounds },
     { "__gc", ltextblob_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1839,7 +1839,7 @@
     { "getFamilyName", ltypeface_getFamilyName },
     { "getStyle", ltypeface_getStyle },
     { "__gc", ltypeface_gc },
-    { NULL, NULL }
+    { nullptr, nullptr }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1873,13 +1873,13 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 static int lsk_newDocumentPDF(lua_State* L) {
-    const char* file = NULL;
+    const char* file = nullptr;
     if (lua_gettop(L) > 0 && lua_isstring(L, 1)) {
-        file = lua_tolstring(L, 1, NULL);
+        file = lua_tolstring(L, 1, nullptr);
     }
 
     SkDocument* doc = SkDocument::CreatePDF(file);
-    if (NULL == doc) {
+    if (nullptr == doc) {
         // do I need to push a nil on the stack and return 1?
         return 0;
     } else {
@@ -1892,7 +1892,7 @@
     SkScalar sigmaX = lua2scalar_def(L, 1, 0);
     SkScalar sigmaY = lua2scalar_def(L, 2, 0);
     SkImageFilter* imf = SkBlurImageFilter::Create(sigmaX, sigmaY);
-    if (NULL == imf) {
+    if (nullptr == imf) {
         lua_pushnil(L);
     } else {
         push_ref(L, imf)->unref();
@@ -1910,8 +1910,8 @@
 
     SkPoint pts[] = { { x0, y0 }, { x1, y1 } };
     SkColor colors[] = { c0, c1 };
-    SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, 2, SkShader::kClamp_TileMode);
-    if (NULL == s) {
+    SkShader* s = SkGradientShader::CreateLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
+    if (nullptr == s) {
         lua_pushnil(L);
     } else {
         push_ref(L, s)->unref();
@@ -1947,7 +1947,7 @@
 #include "SkTextBox.h"
 // Sk.newTextBlob(text, rect, paint)
 static int lsk_newTextBlob(lua_State* L) {
-    const char* text = lua_tolstring(L, 1, NULL);
+    const char* text = lua_tolstring(L, 1, nullptr);
     SkRect bounds;
     lua2rect(L, 2, &bounds);
     const SkPaint& paint = *get_obj<SkPaint>(L, 3);
@@ -1965,21 +1965,21 @@
 }
 
 static int lsk_newTypeface(lua_State* L) {
-    const char* name = NULL;
+    const char* name = nullptr;
     int style = SkTypeface::kNormal;
 
     int count = lua_gettop(L);
     if (count > 0 && lua_isstring(L, 1)) {
-        name = lua_tolstring(L, 1, NULL);
+        name = lua_tolstring(L, 1, nullptr);
         if (count > 1 && lua_isnumber(L, 2)) {
-            style = lua_tointegerx(L, 2, NULL) & SkTypeface::kBoldItalic;
+            style = lua_tointegerx(L, 2, nullptr) & SkTypeface::kBoldItalic;
         }
     }
 
     SkTypeface* face = SkTypeface::CreateFromName(name,
                                                   (SkTypeface::Style)style);
 //    SkDebugf("---- name <%s> style=%d, face=%p ref=%d\n", name, style, face, face->getRefCnt());
-    if (NULL == face) {
+    if (nullptr == face) {
         face = SkTypeface::RefDefault();
     }
     push_ref(L, face)->unref();
@@ -1992,7 +1992,7 @@
     SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
     SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
     SkSurface* surface = SkSurface::NewRaster(info, &props);
-    if (NULL == surface) {
+    if (nullptr == surface) {
         lua_pushnil(L);
     } else {
         push_ref(L, surface)->unref();
@@ -2002,7 +2002,7 @@
 
 static int lsk_loadImage(lua_State* L) {
     if (lua_gettop(L) > 0 && lua_isstring(L, 1)) {
-        const char* name = lua_tolstring(L, 1, NULL);
+        const char* name = lua_tolstring(L, 1, nullptr);
         SkAutoDataUnref data(SkData::NewFromFileName(name));
         if (data.get()) {
             SkImage* image = SkImage::NewFromEncoded(data);