Move classes to //components/ntp_tiles.

chrome/browser/android/ntp/most_visited_sites.h

Index: chrome/browser/android/ntp/most_visited_sites.h
diff --git a/chrome/browser/android/ntp/most_visited_sites.h b/chrome/browser/android/ntp/most_visited_sites.h
deleted file mode 100644
index ff747f25690909b145993710f4a9a8ed2d91eec7..0000000000000000000000000000000000000000
--- a/chrome/browser/android/ntp/most_visited_sites.h
+++ /dev/null
@@ -1,289 +0,0 @@
-// Copyright 2013 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_ANDROID_NTP_MOST_VISITED_SITES_H_
-#define CHROME_BROWSER_ANDROID_NTP_MOST_VISITED_SITES_H_
-
-#include <stddef.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/scoped_observer.h"
-#include "chrome/browser/android/ntp/popular_sites.h"
-#include "components/history/core/browser/history_types.h"
-#include "components/history/core/browser/top_sites_observer.h"
-#include "components/suggestions/proto/suggestions.pb.h"
-#include "components/suggestions/suggestions_service.h"
-#include "url/gurl.h"
-
-namespace gfx {
-class Image;
-}
-
-namespace history {
-class TopSites;
-}
-
-namespace suggestions {
-class SuggestionsService;
-}
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace variations {
-class VariationsService;
-}
-
-// Shim interface for SupervisedUserService.
-class MostVisitedSitesSupervisor {
- public:
-  struct Whitelist {
-    base::string16 title;
-    GURL entry_point;
-    base::FilePath large_icon_path;
-  };
-
-  class Observer {
-   public:
-    virtual void OnBlockedSitesChanged() = 0;
-
-   protected:
-    ~Observer() {}
-  };
-
-  // Pass non-null to set observer, or null to remove observer.
-  // If setting observer, there must not yet be an observer set.
-  // If removing observer, there must already be one to remove.
-  // Does not take ownership. Observer must outlive this object.
-  virtual void SetObserver(Observer* new_observer) = 0;
-
-  // If true, |url| should not be shown on the NTP.
-  virtual bool IsBlocked(const GURL& url) = 0;
-
-  // Explicit suggestions for sites to show on NTP.
-  virtual std::vector<Whitelist> whitelists() = 0;
-
-  // If true, be conservative about suggesting sites from outside sources.
-  virtual bool IsChildProfile() = 0;
-
- protected:
-  virtual ~MostVisitedSitesSupervisor() {}
-};
-
-// Tracks the list of most visited sites and their thumbnails.
-//
-// Do not use, except from MostVisitedSitesBridge. The interface is in flux
-// while we are extracting the functionality of the Java class to make available
-// in C++.
-//
-// TODO(sfiera): finalize interface.
-class MostVisitedSites : public history::TopSitesObserver,
-                         public MostVisitedSitesSupervisor::Observer {
- public:
-  struct Suggestion;
-  using SuggestionsVector = std::vector<Suggestion>;
-  using PopularSitesVector = std::vector<PopularSites::Site>;
-
-  // The source of the Most Visited sites.
-  enum MostVisitedSource { TOP_SITES, SUGGESTIONS_SERVICE, POPULAR, WHITELIST };
-
-  // The observer to be notified when the list of most visited sites changes.
-  class Observer {
-   public:
-    virtual void OnMostVisitedURLsAvailable(
-        const SuggestionsVector& suggestions) = 0;
-    virtual void OnPopularURLsAvailable(const PopularSitesVector& sites) = 0;
-
-   protected:
-    virtual ~Observer() {}
-  };
-
-  struct Suggestion {
-    base::string16 title;
-    GURL url;
-    MostVisitedSource source;
-
-    // Only valid for source == WHITELIST (empty otherwise).
-    base::FilePath whitelist_icon_path;
-
-    // Only valid for source == SUGGESTIONS_SERVICE (-1 otherwise).
-    int provider_index;
-
-    Suggestion();
-    ~Suggestion();
-
-    Suggestion(Suggestion&&);
-    Suggestion& operator=(Suggestion&&);
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(Suggestion);
-  };
-
-  MostVisitedSites(scoped_refptr<base::SequencedWorkerPool> blocking_pool,
-                   PrefService* prefs,
-                   const TemplateURLService* template_url_service,
-                   variations::VariationsService* variations_service,
-                   net::URLRequestContextGetter* download_context,
-                   const base::FilePath& popular_sites_directory,
-                   scoped_refptr<history::TopSites> top_sites,
-                   suggestions::SuggestionsService* suggestions,
-                   MostVisitedSitesSupervisor* supervisor);
-
-  ~MostVisitedSites() override;
-
-  // Does not take ownership of |observer|, which must outlive this object and
-  // must not be null.
-  void SetMostVisitedURLsObserver(Observer* observer, int num_sites);
-
-  using ThumbnailCallback = base::Callback<
-      void(bool /* is_local_thumbnail */, const SkBitmap* /* bitmap */)>;
-  void GetURLThumbnail(const GURL& url, const ThumbnailCallback& callback);
-  void AddOrRemoveBlacklistedUrl(const GURL& url, bool add_url);
-  void RecordTileTypeMetrics(const std::vector<int>& tile_types);
-  void RecordOpenedMostVisitedItem(int index, int tile_type);
-
-  // MostVisitedSitesSupervisor::Observer implementation.
-  void OnBlockedSitesChanged() override;
-
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
- private:
-  friend class MostVisitedSitesTest;
-
-  // TODO(treib): use SuggestionsVector in internal functions. crbug.com/601734
-  using SuggestionsPtrVector = std::vector<std::unique_ptr<Suggestion>>;
-
-  void BuildCurrentSuggestions();
-
-  // Initialize the query to Top Sites. Called if the SuggestionsService
-  // returned no data.
-  void InitiateTopSitesQuery();
-
-  // If there's a whitelist entry point for the URL, return the large icon path.
-  base::FilePath GetWhitelistLargeIconPath(const GURL& url);
-
-  // Callback for when data is available from TopSites.
-  void OnMostVisitedURLsAvailable(
-      const history::MostVisitedURLList& visited_list);
-
-  // Callback for when data is available from the SuggestionsService.
-  void OnSuggestionsProfileAvailable(
-      const suggestions::SuggestionsProfile& suggestions_profile);
-
-  // Takes the personal suggestions and creates whitelist entry point
-  // suggestions if necessary.
-  SuggestionsPtrVector CreateWhitelistEntryPointSuggestions(
-      const SuggestionsPtrVector& personal_suggestions);
-
-  // Takes the personal and whitelist suggestions and creates popular
-  // suggestions if necessary.
-  SuggestionsPtrVector CreatePopularSitesSuggestions(
-      const SuggestionsPtrVector& personal_suggestions,
-      const SuggestionsPtrVector& whitelist_suggestions);
-
-  // Takes the personal suggestions, creates and merges in whitelist and popular
-  // suggestions if appropriate, and saves the new suggestions.
-  void SaveNewSuggestions(SuggestionsPtrVector* personal_suggestions);
-
-  // Workhorse for SaveNewSuggestions above. Implemented as a separate static
-  // method for ease of testing.
-  static SuggestionsPtrVector MergeSuggestions(
-      SuggestionsPtrVector* personal_suggestions,
-      SuggestionsPtrVector* whitelist_suggestions,
-      SuggestionsPtrVector* popular_suggestions);
-
-  // Appends suggestions from |src| to |dst|.
-  static void AppendSuggestions(SuggestionsPtrVector* src,
-                                SuggestionsPtrVector* dst);
-
-  void SaveCurrentSuggestionsToPrefs();
-
-  // Notifies the observer about the availability of suggestions.
-  // Also records impressions UMA if not done already.
-  void NotifyMostVisitedURLsObserver();
-
-  void OnPopularSitesAvailable(bool success);
-
-  // Runs on the UI Thread.
-  void OnLocalThumbnailFetched(
-      const GURL& url,
-      const ThumbnailCallback& callback,
-      std::unique_ptr<SkBitmap> bitmap);
-
-  // Callback for when the thumbnail lookup is complete.
-  // Runs on the UI Thread.
-  void OnObtainedThumbnail(
-      bool is_local_thumbnail,
-      const ThumbnailCallback& callback,
-      const GURL& url,
-      const gfx::Image& bitmap);
-
-  // Records thumbnail-related UMA histogram metrics.
-  void RecordThumbnailUMAMetrics();
-
-  // Records UMA histogram metrics related to the number of impressions.
-  void RecordImpressionUMAMetrics();
-
-  // history::TopSitesObserver implementation.
-  void TopSitesLoaded(history::TopSites* top_sites) override;
-  void TopSitesChanged(history::TopSites* top_sites,
-                       ChangeReason change_reason) override;
-
-  PrefService* prefs_;
-  const TemplateURLService* template_url_service_;
-  variations::VariationsService* variations_service_;
-  net::URLRequestContextGetter* download_context_;
-  base::FilePath popular_sites_directory_;
-  scoped_refptr<history::TopSites> top_sites_;
-  suggestions::SuggestionsService* suggestions_service_;
-  MostVisitedSitesSupervisor* supervisor_;
-
-  Observer* observer_;
-
-  // The maximum number of most visited sites to return.
-  int num_sites_;
-
-  // Whether we have received an initial set of most visited sites (from either
-  // TopSites or the SuggestionsService).
-  bool received_most_visited_sites_;
-
-  // Whether we have received the set of popular sites. Immediately set to true
-  // if popular sites are disabled.
-  bool received_popular_sites_;
-
-  // Whether we have recorded one-shot UMA metrics such as impressions. They are
-  // recorded once both the previous flags are true.
-  bool recorded_uma_;
-
-  std::unique_ptr<
-      suggestions::SuggestionsService::ResponseCallbackList::Subscription>
-      suggestions_subscription_;
-
-  ScopedObserver<history::TopSites, history::TopSitesObserver> scoped_observer_;
-
-  MostVisitedSource mv_source_;
-
-  std::unique_ptr<PopularSites> popular_sites_;
-
-  SuggestionsVector current_suggestions_;
-
-  base::ThreadChecker thread_checker_;
-  scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
-  scoped_refptr<base::TaskRunner> blocking_runner_;
-
-  // For callbacks may be run after destruction.
-  base::WeakPtrFactory<MostVisitedSites> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(MostVisitedSites);
-};
-
-#endif  // CHROME_BROWSER_ANDROID_NTP_MOST_VISITED_SITES_H_