Implement in-memory byte hints in SimpleCache

net/disk_cache/simple/simple_backend_impl.cc

Index: net/disk_cache/simple/simple_backend_impl.cc
diff --git a/net/disk_cache/simple/simple_backend_impl.cc b/net/disk_cache/simple/simple_backend_impl.cc
index 68550fb534b73a2446d06f8d7b1c06c084b0993c..9abe46df4ebc7c88c15bace27234b6fa6889fd5c 100644
--- a/net/disk_cache/simple/simple_backend_impl.cc
+++ b/net/disk_cache/simple/simple_backend_impl.cc
@@ -594,6 +594,17 @@ size_t SimpleBackendImpl::DumpMemoryStats(
   return size;
 }
 
+uint8_t SimpleBackendImpl::GetEntryInMemoryData(const std::string& key) {
+  const uint64_t entry_hash = simple_util::GetEntryHashKey(key);
+  return index_->GetEntryInMemoryData(entry_hash);
+}
+
+void SimpleBackendImpl::SetEntryInMemoryData(const std::string& key,
+                                             uint8_t data) {
+  const uint64_t entry_hash = simple_util::GetEntryHashKey(key);
+  index_->SetEntryInMemoryData(entry_hash, data);
+}
+
 void SimpleBackendImpl::InitializeIndex(const CompletionCallback& callback,
                                         const DiskStatResult& result) {
   if (result.net_error == net::OK) {