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

cc/resources/rasterizer.cc

Index: cc/resources/rasterizer.cc
diff --git a/cc/resources/rasterizer.cc b/cc/resources/rasterizer.cc
index 4ce8987e8ca95385c8863d685163714a3a48f499..6af00e5b00f1c8aa98fe7000d1c4c774d1d7eaaf 100644
--- a/cc/resources/rasterizer.cc
+++ b/cc/resources/rasterizer.cc
@@ -16,9 +16,13 @@ RasterizerTask::~RasterizerTask() {
   CHECK(!did_run_ || did_complete_);
 }
 
-ImageDecodeTask* RasterizerTask::AsImageDecodeTask() { return NULL; }
+ImageDecodeTask* RasterizerTask::AsImageDecodeTask() {
+  return nullptr;
+}
 
-RasterTask* RasterizerTask::AsRasterTask() { return NULL; }
+RasterTask* RasterizerTask::AsRasterTask() {
+  return nullptr;
+}
 
 void RasterizerTask::WillSchedule() { DCHECK(!did_schedule_); }