Remove code path that passes a file handle to the renderer...

net/disk_cache/entry_impl.h

Index: net/disk_cache/entry_impl.h
===================================================================
--- net/disk_cache/entry_impl.h	(revision 17048)
+++ net/disk_cache/entry_impl.h	(working copy)
@@ -33,8 +33,6 @@
   virtual int WriteData(int index, int offset, net::IOBuffer* buf, int buf_len,
                         net::CompletionCallback* completion_callback,
                         bool truncate);
-  virtual base::PlatformFile UseExternalFile(int index);
-  virtual base::PlatformFile GetPlatformFile(int index);
 
   inline CacheEntryBlock* entry() {
     return &entry_;
@@ -146,8 +144,6 @@
                                                 // data and key.
   int unreported_size_[NUM_STREAMS];  // Bytes not reported yet to the backend.
   bool doomed_;               // True if this entry was removed from the cache.
-  bool need_file_[NUM_STREAMS];  // True if stream is prepared as an external
-                                 // file.
   DISALLOW_EVIL_CONSTRUCTORS(EntryImpl);
 };