Reorganize net/disk_cache into backend specific directories.

net/disk_cache/blockfile/eviction.cc

Index: net/disk_cache/blockfile/eviction.cc
diff --git a/net/disk_cache/eviction.cc b/net/disk_cache/blockfile/eviction.cc
similarity index 98%
rename from net/disk_cache/eviction.cc
rename to net/disk_cache/blockfile/eviction.cc
index 6f50337f6b018cf615547d09184a52e08aee0cf0..6cfb7d24b27ee3f464d7add096d34cd86b2f154b 100644
--- a/net/disk_cache/eviction.cc
+++ b/net/disk_cache/blockfile/eviction.cc
@@ -26,7 +26,7 @@
 // size so that we have a chance to see an element again and move it to another
 // list.
 
-#include "net/disk_cache/eviction.h"
+#include "net/disk_cache/blockfile/eviction.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ -34,14 +34,14 @@
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
-#include "net/disk_cache/backend_impl.h"
-#include "net/disk_cache/disk_format.h"
-#include "net/disk_cache/entry_impl.h"
-#include "net/disk_cache/experiments.h"
-#include "net/disk_cache/trace.h"
+#include "net/disk_cache/blockfile/backend_impl.h"
+#include "net/disk_cache/blockfile/disk_format.h"
+#include "net/disk_cache/blockfile/entry_impl.h"
+#include "net/disk_cache/blockfile/experiments.h"
+#include "net/disk_cache/blockfile/trace.h"
 
 #define CACHE_HISTOGRAM_MACROS_BACKEND_IMPL_OBJ backend_
-#include "net/disk_cache/histogram_macros.h"
+#include "net/disk_cache/blockfile/histogram_macros.h"
 
 using base::Time;
 using base::TimeTicks;