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

net/disk_cache/blockfile/backend_worker_v3.cc

Index: net/disk_cache/blockfile/backend_worker_v3.cc
diff --git a/net/disk_cache/blockfile/backend_worker_v3.cc b/net/disk_cache/blockfile/backend_worker_v3.cc
index 897ee3c3d3933539ac1b3c4934e5cd7273de02b8..db74fbad3b40dc5be162292bf8850e31e966c3e1 100644
--- a/net/disk_cache/blockfile/backend_worker_v3.cc
+++ b/net/disk_cache/blockfile/backend_worker_v3.cc
@@ -417,7 +417,7 @@ bool BackendImpl::CheckIndex() {
     mask_ = data_->header.table_len - 1;
 
   // Load the table into memory with a single read.
-  scoped_ptr<char[]> buf(new char[current_size]);
+  std::unique_ptr<char[]> buf(new char[current_size]);
   return index_->Read(buf.get(), current_size, 0);
 }
 
@@ -446,7 +446,7 @@ bool BackendImpl::InitStats() {
   if (!file)
     return false;
 
-  scoped_ptr<char[]> data(new char[size]);
+  std::unique_ptr<char[]> data(new char[size]);
   size_t offset = address.start_block() * address.BlockSize() +
                   kBlockHeaderSize;
   if (!file->Read(data.get(), size, offset))