Disk cache: Remove remaining uses of RankingsNode.pointer....

net/disk_cache/eviction.cc

Index: net/disk_cache/eviction.cc
===================================================================
--- net/disk_cache/eviction.cc	(revision 21923)
+++ net/disk_cache/eviction.cc	(working copy)
@@ -92,7 +92,7 @@
       break;
     node.reset(next.release());
     next.reset(rankings_->GetPrev(node.get(), Rankings::NO_USE));
-    if (!node->Data()->pointer || empty) {
+    if (node->Data()->dirty != backend_->GetCurrentEntryId() || empty) {
       // This entry is not being used by anybody.
       // Do NOT use node as an iterator after this point.
       rankings_->TrackRankingsBlock(node.get(), false);
@@ -275,7 +275,7 @@
       node.reset(next[list].release());
       next[list].reset(rankings_->GetPrev(node.get(),
                                           static_cast<Rankings::List>(list)));
-      if (!node->Data()->pointer || empty) {
+      if (node->Data()->dirty != backend_->GetCurrentEntryId() || empty) {
         // This entry is not being used by anybody.
         // Do NOT use node as an iterator after this point.
         rankings_->TrackRankingsBlock(node.get(), false);
@@ -425,7 +425,7 @@
 
   // TODO(rvargas): figure out how to deal with corruption at this point (dirty
   // entries that live in this list).
-  if (node->Data()->pointer) {
+  if (node->Data()->dirty) {
     // We ignore the failure; we're removing the entry anyway.
     entry->Update();
   }