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

net/disk_cache/blockfile/entry_impl.cc

Index: net/disk_cache/blockfile/entry_impl.cc
diff --git a/net/disk_cache/blockfile/entry_impl.cc b/net/disk_cache/blockfile/entry_impl.cc
index 60204641b9f270d3a4b7a26391e0c7d04f2ee984..ad947421c80306f1f8f2e8d6991620ff0c2e8efb 100644
--- a/net/disk_cache/blockfile/entry_impl.cc
+++ b/net/disk_cache/blockfile/entry_impl.cc
@@ -902,7 +902,7 @@ bool EntryImpl::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();
 }
@@ -1505,7 +1505,7 @@ 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);