Reduce visibility of methods in AutofillManager and AutofillDownload.

chrome/browser/autofill/autofill_download.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.
 
 #ifndef CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_
 #define CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_
 #pragma once
 
 #include <stddef.h>
 #include <list>
@@ skipping 19 matching lines @@
 
 // Handles getting and updating Autofill heuristics.
 class AutofillDownloadManager : public content::URLFetcherDelegate {
  public:
   enum AutofillRequestType {
     REQUEST_QUERY,
     REQUEST_UPLOAD,
   };
 
   // An interface used to notify clients of AutofillDownloadManager.
-  // Notifications are *not* guaranteed to be called.
   class Observer {
    public:
     // Called when field type predictions are successfully received from the
-    // server.
-    // |response_xml| - server response.
+    // server.  |response_xml| contains the server response.
     virtual void OnLoadedServerPredictions(const std::string& response_xml) = 0;
+
+    // These notifications are used to help with testing.
     // Called when heuristic either successfully considered for upload and
     // not send or uploaded.
-    virtual void OnUploadedPossibleFieldTypes() = 0;
+    virtual void OnUploadedPossibleFieldTypes() {}
     // Called when there was an error during the request.
     // |form_signature| - the signature of the requesting form.
     // |request_type| - type of request that failed.
     // |http_error| - HTTP error code.
     virtual void OnServerRequestError(const std::string& form_signature,
                                       AutofillRequestType request_type,
-                                      int http_error) = 0;
+                                      int http_error) {}
+
    protected:
     virtual ~Observer() {}
   };
 
-  // |profile| can be NULL in unit-tests only.
-  explicit AutofillDownloadManager(Profile* profile);
+  // |observer| - observer to notify on successful completion or error.
+  AutofillDownloadManager(Profile* profile, Observer* observer);
   virtual ~AutofillDownloadManager();
 
-  // |observer| - observer to notify on successful completion or error.
-  void SetObserver(AutofillDownloadManager::Observer* observer);
-
   // Starts a query request to Autofill servers. The observer is called with the
   // list of the fields of all requested forms.
   // |forms| - array of forms aggregated in this request.
   bool StartQueryRequest(const std::vector<FormStructure*>& forms,
                          const AutofillMetrics& metric_logger);
 
   // Starts an upload request for the given |form|, unless throttled by the
   // server. The probability of the request going over the wire is
   // GetPositiveUploadRate() if |form_was_autofilled| is true, or
   // GetNegativeUploadRate() otherwise. The observer will be called even if
   // there was no actual trip over the wire.
   // |available_field_types| should contain the types for which we have data
   // stored on the local client.
   bool StartUploadRequest(const FormStructure& form,
                           bool form_was_autofilled,
                           const FieldTypeSet& available_field_types);
 
-  // Cancels pending request.
-  // |form_signature| - signature of the form being cancelled. Warning:
-  // for query request if more than one form sent in the request, all other
-  // forms will be cancelled as well.
-  // |request_type| - type of the request.
-  bool CancelRequest(const std::string& form_signature,
-                     AutofillRequestType request_type);
-
  private:
   friend class AutofillDownloadTest;
   FRIEND_TEST_ALL_PREFIXES(AutofillDownloadTest, QueryAndUploadTest);
 
   struct FormRequestData;
   typedef std::list<std::pair<std::string, std::string> > QueryRequestCache;
 
   // Initiates request to Autofill servers to download/upload heuristics.
   // |form_xml| - form structure XML to upload/download.
   // |request_data| - form signature hash(es) and indicator if it was a query.
@@ skipping 26 matching lines @@
   virtual void OnURLFetchComplete(const content::URLFetcher* source) OVERRIDE;
 
   // Probability of the form upload. Between 0 (no upload) and 1 (upload all).
   // GetPositiveUploadRate() is for matched forms,
   // GetNegativeUploadRate() for non-matched.
   double GetPositiveUploadRate() const;
   double GetNegativeUploadRate() const;
   void SetPositiveUploadRate(double rate);
   void SetNegativeUploadRate(double rate);
 
-  // Profile for preference storage.
-  Profile* profile_;
+  // Profile for preference storage.  The pointer value is const, so this can
+  // only be set in the constructor.  Must not be null.
+  Profile* const profile_;  // WEAK
+  // The observer to notify when server predictions are successfully received.
+  // The pointer value is const, so this can only be set in the constructor.
+  // Must not be null.
+  AutofillDownloadManager::Observer* const observer_;  // WEAK
 
   // For each requested form for both query and upload we create a separate
   // request and save its info. As url fetcher is identified by its address
   // we use a map between fetchers and info.
   std::map<content::URLFetcher*, FormRequestData> url_fetchers_;
-  AutofillDownloadManager::Observer *observer_;
 
   // Cached QUERY requests.
   QueryRequestCache cached_forms_;
   size_t max_form_cache_size_;
 
   // Time when next query/upload requests are allowed. If 50x HTTP received,
   // exponential back off is initiated, so this times will be in the future
   // for awhile.
   base::Time next_query_request_;
   base::Time next_upload_request_;
 
   // |positive_upload_rate_| is for matched forms,
   // |negative_upload_rate_| for non matched.
   double positive_upload_rate_;
   double negative_upload_rate_;
 
   // Needed for unit-test.
   int fetcher_id_for_unittest_;
 };
 
 #endif  // CHROME_BROWSER_AUTOFILL_AUTOFILL_DOWNLOAD_H_