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

cc/layers/texture_layer.cc

Index: cc/layers/texture_layer.cc
diff --git a/cc/layers/texture_layer.cc b/cc/layers/texture_layer.cc
index d8634ea1f136a7cbdf2bc38b4fc4b5088d2be47a..eee4ea635ab6d6a88a6831e4fcf68ad58acffed2 100644
--- a/cc/layers/texture_layer.cc
+++ b/cc/layers/texture_layer.cc
@@ -45,7 +45,7 @@ TextureLayer::~TextureLayer() {
 void TextureLayer::ClearClient() {
   if (rate_limit_context_ && client_ && layer_tree_host())
     layer_tree_host()->StopRateLimiter();
-  client_ = NULL;
+  client_ = nullptr;
   ClearTexture();
   UpdateDrawsContent(HasDrawableContent());
 }