base::Bind: Cleanup almost-unused OldCompletionCallbacks.

chrome/browser/browsing_data_remover.cc

Index: chrome/browser/browsing_data_remover.cc
diff --git a/chrome/browser/browsing_data_remover.cc b/chrome/browser/browsing_data_remover.cc
index d708cd9aff880910e2d9a5eabf7c6752413b7ea7..2d32fc8d3aa6d4dc0f3585f4868dd094edac5b7c 100644
--- a/chrome/browser/browsing_data_remover.cc
+++ b/chrome/browser/browsing_data_remover.cc
@@ -478,10 +478,14 @@ void BrowsingDataRemover::DoClearCache(int rv) {
         // |cache_| can be null if it cannot be initialized.
         if (cache_) {
           if (delete_begin_.is_null()) {
-            rv = cache_->DoomAllEntries(&cache_callback_);
+            rv = cache_->DoomAllEntries(
+                base::Bind(&BrowsingDataRemover::DoClearCache,
+                           base::Unretained(this)));
           } else {
-            rv = cache_->DoomEntriesBetween(delete_begin_, delete_end_,
-                                            &cache_callback_);
+            rv = cache_->DoomEntriesBetween(
+                delete_begin_, delete_end_,
+                base::Bind(&BrowsingDataRemover::DoClearCache,
+                           base::Unretained(this)));
           }
           cache_ = NULL;
         }