Revert of Remove void** from disk_cache interface.

net/disk_cache/disk_cache_test_base.h

Index: net/disk_cache/disk_cache_test_base.h
diff --git a/net/disk_cache/disk_cache_test_base.h b/net/disk_cache/disk_cache_test_base.h
index 225d37fc98e4135c851717769bb509000ba41513..b724906289528dc425c41606cdabb71941602170 100644
--- a/net/disk_cache/disk_cache_test_base.h
+++ b/net/disk_cache/disk_cache_test_base.h
@@ -11,7 +11,6 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread.h"
 #include "net/base/cache_type.h"
-#include "net/disk_cache/disk_cache.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
@@ -58,17 +57,6 @@
 // Provides basic support for cache related tests.
 class DiskCacheTestWithCache : public DiskCacheTest {
  protected:
-  class TestIterator {
-   public:
-    explicit TestIterator(scoped_ptr<disk_cache::Backend::Iterator> iterator);
-    ~TestIterator();
-
-    int OpenNextEntry(disk_cache::Entry** next_entry);
-
-   private:
-    scoped_ptr<disk_cache::Backend::Iterator> iterator_;
-  };
-
   DiskCacheTestWithCache();
   virtual ~DiskCacheTestWithCache();
 
@@ -129,7 +117,7 @@
   int DoomEntriesBetween(const base::Time initial_time,
                          const base::Time end_time);
   int DoomEntriesSince(const base::Time initial_time);
-  scoped_ptr<TestIterator> CreateIterator();
+  int OpenNextEntry(void** iter, disk_cache::Entry** next_entry);
   void FlushQueueForTest();
   void RunTaskForTest(const base::Closure& closure);
   int ReadData(disk_cache::Entry* entry, int index, int offset,