Convert //cc from scoped_ptr to std::unique_ptr.

cc/layers/texture_layer_impl.cc

Index: cc/layers/texture_layer_impl.cc
diff --git a/cc/layers/texture_layer_impl.cc b/cc/layers/texture_layer_impl.cc
index 27d3c971f64a8b8b8c39e221f86cbc2ce9a1dca1..1474bbf19309b3065ca8e80013f9cde2e7409bd2 100644
--- a/cc/layers/texture_layer_impl.cc
+++ b/cc/layers/texture_layer_impl.cc
@@ -43,7 +43,7 @@ TextureLayerImpl::~TextureLayerImpl() { FreeTextureMailbox(); }
 
 void TextureLayerImpl::SetTextureMailbox(
     const TextureMailbox& mailbox,
-    scoped_ptr<SingleReleaseCallbackImpl> release_callback) {
+    std::unique_ptr<SingleReleaseCallbackImpl> release_callback) {
   DCHECK_EQ(mailbox.IsValid(), !!release_callback);
   FreeTextureMailbox();
   texture_mailbox_ = mailbox;
@@ -53,7 +53,7 @@ void TextureLayerImpl::SetTextureMailbox(
   SetNeedsPushProperties();
 }
 
-scoped_ptr<LayerImpl> TextureLayerImpl::CreateLayerImpl(
+std::unique_ptr<LayerImpl> TextureLayerImpl::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
   return TextureLayerImpl::Create(tree_impl, id());
 }