Revert 204354 "Add read support to PNaClTranslationCache"

trunk/src/chrome/browser/nacl_host/pnacl_translation_cache.h

Index: trunk/src/chrome/browser/nacl_host/pnacl_translation_cache.h
===================================================================
--- trunk/src/chrome/browser/nacl_host/pnacl_translation_cache.h	(revision 204381)
+++ trunk/src/chrome/browser/nacl_host/pnacl_translation_cache.h	(working copy)
@@ -22,7 +22,7 @@
 
 namespace pnacl_cache {
 typedef base::Callback<void(int)> CompletionCallback;
-class PNaClTranslationCacheEntry;
+class PNaClTranslationCacheWriteEntry;
 extern const int kMaxMemCacheSize;
 
 class PNaClTranslationCache
@@ -48,20 +48,19 @@
                  const std::string& nexe,
                  const CompletionCallback& callback);
 
-  // Retrieve the nexe from the translation cache. Write the data into |nexe|
-  // and call |callback| with the result (0 on success and <0 otherwise)
-  void GetNexe(const std::string& key,
-               std::string* nexe,
-               const CompletionCallback& callback);
+  // Retrieve the nexe from the translation cache. (Not implemented yet.)
+  int GetNexe(const std::string& key,
+              std::string* nexe,
+              const CompletionCallback& callback);
 
   // Return the number of entries in the cache backend.
   int Size();
 
  private:
-  friend class PNaClTranslationCacheEntry;
-  // PNaClTranslationCacheEntry should only use the
-  // OpComplete and backend methods on PNaClTranslationCache.
-  void OpComplete(PNaClTranslationCacheEntry* entry);
+  friend class PNaClTranslationCacheWriteEntry;
+  // PNaClTranslationCacheWriteEntry should only use the
+  // WriteComplete and backend methods on PNaClTranslationCache.
+  void WriteComplete(PNaClTranslationCacheWriteEntry* entry);
   disk_cache::Backend* backend() { return disk_cache_; }
 
   int InitWithDiskBackend(const base::FilePath& disk_cache_dir,
@@ -80,7 +79,8 @@
   disk_cache::Backend* disk_cache_;
   CompletionCallback init_callback_;
   bool in_memory_;
-  std::map<void*, scoped_refptr<PNaClTranslationCacheEntry> > open_entries_;
+  std::map<void*, scoped_refptr<PNaClTranslationCacheWriteEntry> >
+      write_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(PNaClTranslationCache);
 };