Revert of Clear SDCH information on "Clear browsing data" path.

net/base/sdch_manager.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Provides global database of differential decompression dictionaries for the
 // SDCH filter (processes sdch enconded content).
 
 // Exactly one instance of SdchManager is built, and all references are made
 // into that collection.
 //
@@ skipping 31 matching lines @@
 // functionality in this base (when the functionaity can be provided).
 class SdchFetcher {
  public:
   SdchFetcher() {}
   virtual ~SdchFetcher() {}
 
   // The Schedule() method is called when there is a need to get a dictionary
   // from a server.  The callee is responsible for getting that dictionary_text,
   // and then calling back to AddSdchDictionary() to the SdchManager instance.
   virtual void Schedule(const GURL& dictionary_url) = 0;
-
-  // The Cancel() method is called to cancel all pending dictionary fetches.
-  // This is used for implementation of ClearData() below.
-  virtual void Cancel() = 0;
-
  private:
   DISALLOW_COPY_AND_ASSIGN(SdchFetcher);
 };
 
 //------------------------------------------------------------------------------
 
 class NET_EXPORT SdchManager : public NON_EXPORTED_BASE(base::NonThreadSafe) {
  public:
   // A list of errors that appeared and were either resolved, or used to turn
   // off sdch encoding.
@@ skipping 165 matching lines @@
     const std::string path_;
     const base::Time expiration_;  // Implied by max-age.
     const std::set<int> ports_;
 
     DISALLOW_COPY_AND_ASSIGN(Dictionary);
   };
 
   SdchManager();
   ~SdchManager();
 
-  // Clear data (for browser data removal).
-  void ClearData();
-
   // Record stats on various errors.
   static void SdchErrorRecovery(ProblemCodes problem);
 
   // Register a fetcher that this class can use to obtain dictionaries.
   void set_sdch_fetcher(SdchFetcher* fetcher);
 
   // Enables or disables SDCH compression.
   static void EnableSdchSupport(bool enabled);
 
   static bool sdch_enabled() { return g_sdch_enabled_; }
@@ skipping 104 matching lines @@
 
   // An instance that can fetch a dictionary given a URL.
   scoped_ptr<SdchFetcher> fetcher_;
 
   // List domains where decode failures have required disabling sdch, along with
   // count of how many additonal uses should be blacklisted.
   DomainCounter blacklisted_domains_;
 
   // Support exponential backoff in number of domain accesses before
   // blacklisting expires.
-  DomainCounter exponential_blacklist_count_;
+  DomainCounter exponential_blacklist_count;
 
   // List of hostnames for which a latency experiment is allowed (because a
   // round trip test has recently passed).
   ExperimentSet allow_latency_experiment_;
 
   DISALLOW_COPY_AND_ASSIGN(SdchManager);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SDCH_MANAGER_H_