Add an about:flag to support alternative data saver features

components/data_reduction_proxy/core/common/lofi_decider.h

Index: components/data_reduction_proxy/core/common/lofi_decider.h
diff --git a/components/data_reduction_proxy/core/common/lofi_decider.h b/components/data_reduction_proxy/core/common/lofi_decider.h
index 867ecf5059dfab84f6e6d0f68ca0838b3a3e6cdc..61ce4668d6df731d0fb5a7ae433a17ea763c18ce 100644
--- a/components/data_reduction_proxy/core/common/lofi_decider.h
+++ b/components/data_reduction_proxy/core/common/lofi_decider.h
@@ -54,11 +54,6 @@ class LoFiDecider {
   virtual void RemoveAcceptTransformHeader(
       net::HttpRequestHeaders* headers) const = 0;
 
-  // Adds a directive to tell the server to ignore blacklists when a Lite Page
-  // preview is being requested due to command line flags being set.
-  virtual void MaybeSetIgnorePreviewsBlacklistDirective(
-      net::HttpRequestHeaders* headers) const = 0;
-
   // Returns true if the Lo-Fi specific UMA should be recorded. It is set to
   // true if Lo-Fi is enabled for |request|, Chrome session is in Lo-Fi
   // Enabled or Control field trial, and the network quality was slow.