Change scoped_ptr to std::unique_ptr in //net/disk_cache.

net/disk_cache/blockfile/entry_impl_v3.cc

Index: net/disk_cache/blockfile/entry_impl_v3.cc
diff --git a/net/disk_cache/blockfile/entry_impl_v3.cc b/net/disk_cache/blockfile/entry_impl_v3.cc
index 883a6f24ade2e684ff16d50cc63756643284339a..bb7021046a1a09709820b2fec0a3cf76b720db7e 100644
--- a/net/disk_cache/blockfile/entry_impl_v3.cc
+++ b/net/disk_cache/blockfile/entry_impl_v3.cc
@@ -689,7 +689,7 @@ bool EntryImplV3::CouldBeSparse() const {
   if (sparse_.get())
     return true;
 
-  scoped_ptr<SparseControl> sparse;
+  std::unique_ptr<SparseControl> sparse;
   sparse.reset(new SparseControl(const_cast<EntryImpl*>(this)));
   return sparse->CouldBeSparse();
 }
@@ -1326,7 +1326,7 @@ int EntryImpl::InitSparseData() {
     return net::OK;
 
   // Use a local variable so that sparse_ never goes from 'valid' to NULL.
-  scoped_ptr<SparseControl> sparse(new SparseControl(this));
+  std::unique_ptr<SparseControl> sparse(new SparseControl(this));
   int result = sparse->Init();
   if (net::OK == result)
     sparse_.swap(sparse);