[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr in src/…

cc/resources/picture_pile_impl.cc

Index: cc/resources/picture_pile_impl.cc
diff --git a/cc/resources/picture_pile_impl.cc b/cc/resources/picture_pile_impl.cc
index f4fbdf2d014eaee8a2ad44125d267b4b077be4dd..d89bc278097d7f62a92525aac17e0e2df7cb5e50 100644
--- a/cc/resources/picture_pile_impl.cc
+++ b/cc/resources/picture_pile_impl.cc
@@ -44,7 +44,7 @@ void PicturePileImpl::RasterDirect(
     float contents_scale,
     RenderingStatsInstrumentation* rendering_stats_instrumentation) {
   RasterCommon(canvas,
-               NULL,
+               nullptr,
                canvas_rect,
                contents_scale,
                rendering_stats_instrumentation,
@@ -123,7 +123,7 @@ void PicturePileImpl::RasterToBitmap(
   }
 
   RasterCommon(canvas,
-               NULL,
+               nullptr,
                canvas_rect,
                contents_scale,
                rendering_stats_instrumentation,
@@ -317,7 +317,7 @@ skia::RefPtr<SkPicture> PicturePileImpl::GetFlattenedPicture() {
   SkCanvas* canvas =
       recorder.beginRecording(tiling_rect.width(), tiling_rect.height());
   if (!tiling_rect.IsEmpty())
-    RasterToBitmap(canvas, tiling_rect, 1.0, NULL);
+    RasterToBitmap(canvas, tiling_rect, 1.0, nullptr);
   skia::RefPtr<SkPicture> picture = skia::AdoptRef(recorder.endRecording());
 
   return picture;
@@ -326,7 +326,7 @@ skia::RefPtr<SkPicture> PicturePileImpl::GetFlattenedPicture() {
 void PicturePileImpl::AnalyzeInRect(const gfx::Rect& content_rect,
                                     float contents_scale,
                                     PicturePileImpl::Analysis* analysis) const {
-  AnalyzeInRect(content_rect, contents_scale, analysis, NULL);
+  AnalyzeInRect(content_rect, contents_scale, analysis, nullptr);
 }
 
 void PicturePileImpl::AnalyzeInRect(