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

cc/resources/one_copy_raster_worker_pool.cc

Index: cc/resources/one_copy_raster_worker_pool.cc
diff --git a/cc/resources/one_copy_raster_worker_pool.cc b/cc/resources/one_copy_raster_worker_pool.cc
index fba320f108f49e9456238ed395e15d9d7a62c397..8f8d9591fe4a0fdde8dd43f5f50061f243dde02a 100644
--- a/cc/resources/one_copy_raster_worker_pool.cc
+++ b/cc/resources/one_copy_raster_worker_pool.cc
@@ -31,7 +31,7 @@ class RasterBufferImpl : public RasterBuffer {
         lock_(new ResourceProvider::ScopedWriteLockGpuMemoryBuffer(
             resource_provider_,
             raster_resource_->id())),
-        buffer_(NULL) {}
+        buffer_(nullptr) {}
 
   virtual ~RasterBufferImpl() {
     // First unlock raster resource.