Introduce BookmarkClient interface to abstract embedder

chrome/browser/bookmarks/bookmark_model.h

Index: chrome/browser/bookmarks/bookmark_model.h
diff --git a/chrome/browser/bookmarks/bookmark_model.h b/chrome/browser/bookmarks/bookmark_model.h
index 816b89b627113e8062d997948e92060e6f814f54..f78b0b5d248d6eaf91cb5416cf68cf7dd6b33c2b 100644
--- a/chrome/browser/bookmarks/bookmark_model.h
+++ b/chrome/browser/bookmarks/bookmark_model.h
@@ -17,13 +17,9 @@
 #include "base/strings/string16.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
-#include "base/task/cancelable_task_tracker.h"
+#include "components/bookmarks/core/browser/bookmark_client.h"
 #include "components/bookmarks/core/browser/bookmark_node.h"
 #include "components/bookmarks/core/browser/bookmark_service.h"
-#include "components/favicon_base/favicon_types.h"
-#include "components/keyed_service/core/keyed_service.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "ui/gfx/image/image.h"
 #include "url/gurl.h"
 
@@ -33,17 +29,22 @@ class BookmarkLoadDetails;
 class BookmarkModelObserver;
 class BookmarkStorage;
 struct BookmarkMatch;
-class Profile;
+class PrefService;
 class ScopedGroupBookmarkActions;
 
 namespace base {
+class FilePath;
 class SequencedTaskRunner;
 }
 
-namespace chrome {
+namespace favicon_base {
 struct FaviconImageResult;
 }
 
+namespace test {
+class TestBookmarkClient;
+}
+
 // BookmarkModel --------------------------------------------------------------
 
 // BookmarkModel provides a directed acyclic graph of URLs and folders.
@@ -54,22 +55,25 @@ struct FaviconImageResult;
 //
 // You should NOT directly create a BookmarkModel, instead go through the
 // BookmarkModelFactory.
-class BookmarkModel : public content::NotificationObserver,
-                      public BookmarkService,
-                      public KeyedService {
+class BookmarkModel : public BookmarkService {
  public:
   // |index_urls| says whether URLs should be stored in the BookmarkIndex
   // in addition to bookmark titles.
-  BookmarkModel(Profile* profile, bool index_urls);
+  BookmarkModel(BookmarkClient* client, bool index_urls);
   virtual ~BookmarkModel();
 
   // Invoked prior to destruction to release any necessary resources.
-  virtual void Shutdown() OVERRIDE;
+  void Shutdown();
 
   // Loads the bookmarks. This is called upon creation of the
   // BookmarkModel. You need not invoke this directly.
-  // All load operations will be executed on |task_runner|.
-  void Load(const scoped_refptr<base::SequencedTaskRunner>& task_runner);
+  // All load operations will be executed on |io_task_runner| and the completion
+  // callback will be called from |ui_task_runner|.
+  void Load(PrefService* pref_service,
+            const std::string& accept_languages,
+            const base::FilePath& profile_path,
+            const scoped_refptr<base::SequencedTaskRunner>& io_task_runner,
+            const scoped_refptr<base::SequencedTaskRunner>& ui_task_runner);
 
   // Returns true if the model finished loading.
   bool loaded() const { return loaded_; }
@@ -249,14 +253,19 @@ class BookmarkModel : public content::NotificationObserver,
   void SetNodeSyncTransactionVersion(const BookmarkNode* node,
                                      int64 sync_transaction_version);
 
-  // Returns the profile that corresponds to this BookmarkModel.
-  Profile* profile() { return profile_; }
+  // Notify BookmarkModel that the favicons for |urls| have changed and have to
+  // be refetched. This notification is sent by BookmarkClient.
+  void OnFaviconChanged(const std::set<GURL>& urls);
+
+  // Returns the client used by this BookmarkModel.
+  BookmarkClient* client() const { return client_; }
 
  private:
   friend class BookmarkCodecTest;
   friend class BookmarkModelTest;
   friend class BookmarkStorage;
   friend class ScopedGroupBookmarkActions;
+  friend class test::TestBookmarkClient;
 
   // Used to order BookmarkNodes by URL.
   class NodeURLComparator {
@@ -297,10 +306,6 @@ class BookmarkModel : public content::NotificationObserver,
   // Remove |node| from |nodes_ordered_by_url_set_|.
   void RemoveNodeFromURLSet(BookmarkNode* node);
 
-  // Notifies the history backend about urls of removed bookmarks.
-  void NotifyHistoryAboutRemovedBookmarks(
-      const std::set<GURL>& removed_bookmark_urls) const;
-
   // Adds the |node| at |parent| in the specified |index| and notifies its
   // observers.
   BookmarkNode* AddNode(BookmarkNode* parent,
@@ -335,11 +340,6 @@ class BookmarkModel : public content::NotificationObserver,
   void BeginGroupedChanges();
   void EndGroupedChanges();
 
-  // content::NotificationObserver:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
   // Generates and returns the next node ID.
   int64 generate_next_node_id();
 
@@ -350,11 +350,9 @@ class BookmarkModel : public content::NotificationObserver,
 
   // Creates and returns a new BookmarkLoadDetails. It's up to the caller to
   // delete the returned object.
-  BookmarkLoadDetails* CreateLoadDetails();
-
-  content::NotificationRegistrar registrar_;
+  BookmarkLoadDetails* CreateLoadDetails(const std::string& accept_languages);
 
-  Profile* profile_;
+  BookmarkClient* const client_;
 
   // Whether the initial set of data has been loaded.
   bool loaded_;