Add FormFetcher::RemoveConsumer

components/password_manager/core/browser/form_fetcher.h

 // Copyright 2016 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FORM_FETCHER_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FORM_FETCHER_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 38 matching lines @@
 
   FormFetcher() = default;
 
   virtual ~FormFetcher() = default;
 
   // Adds |consumer|, which must not be null. If the current state is
   // UP_TO_DATE, calls ProcessMatches on the consumer immediately. Assumes that
   // |consumer| outlives |this|.
   virtual void AddConsumer(Consumer* consumer) = 0;
 
+  // Call this to stop |consumer| from receiving updates from |this|.
+  virtual void RemoveConsumer(Consumer* consumer) = 0;
+
   // Returns the current state of the FormFetcher
   virtual State GetState() const = 0;
 
   // Statistics for recent password bubble usage.
   virtual const std::vector<InteractionsStats>& GetInteractionsStats()
       const = 0;
 
   // Federated matches obtained from the backend. Valid only if GetState()
   // returns NOT_WAITING.
   virtual const std::vector<const autofill::PasswordForm*>&
@@ skipping 10 matching lines @@
   // otherwise the original FormFetcher does not have any data to be cloned.
   virtual std::unique_ptr<FormFetcher> Clone() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FormFetcher);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_FORM_FETCHER_H_