Disk cache: Open the disk cache experiment for new users....

net/disk_cache/backend_impl.h

Index: net/disk_cache/backend_impl.h
===================================================================
--- net/disk_cache/backend_impl.h	(revision 22075)
+++ net/disk_cache/backend_impl.h	(working copy)
@@ -23,7 +23,8 @@
   kMaxSize = 1 << 1,
   kUnitTestMode = 1 << 2,
   kUpgradeMode = 1 << 3,
-  kNewEviction = 1 << 4
+  kNewEviction = 1 << 4,
+  kNoRandom = 1 << 5
 };
 
 // This class implements the Backend interface. An object of this
@@ -170,6 +171,9 @@
   // Sets the eviction algorithm to version 2.
   void SetNewEviction();
 
+  // Sets an explicit set of BackendFlags.
+  void SetFlags(uint32 flags);
+
   // Clears the counter of references to test handling of corruptions.
   void ClearRefCountForTest();