Remove Profile and HostDesktopType dependencies from core TabRestore code

components/sessions/core/tab_restore_service_client.h

 // Copyright 2015 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_SESSIONS_CORE_TAB_RESTORE_SERVICE_CLIENT_H_
 #define COMPONENTS_SESSIONS_CORE_TAB_RESTORE_SERVICE_CLIENT_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_vector.h"
 #include "components/sessions/session_id.h"
 
 namespace base {
 class CancelableTaskTracker;
 class SequencedWorkerPool;
 }
 
+// TODO(blundell): Remove all references to WebContents from
+// TabRestoreServiceClient and get rid of this. crbug.com/530174
+namespace content {
+class WebContents;
+}
+
 namespace sessions {
 struct SessionWindow;
 }
 
 class GURL;
+class TabRestoreServiceDelegate;
 
 namespace sessions {
 
 struct SessionWindow;
 
 // Callback from TabRestoreServiceClient::GetLastSession.
 // The second parameter is the id of the window that was last active.
 typedef base::Callback<void(ScopedVector<SessionWindow>, SessionID::id_type)>
     GetLastSessionCallback;
 
 // A client interface that needs to be supplied to the tab restore service by
 // the embedder.
 class TabRestoreServiceClient {
  public:
   virtual ~TabRestoreServiceClient() {}
 
+  // Creates a TabRestoreServiceDelegate instance that is associated with
+  // |host_desktop_type| and |app_name|. May return nullptr (e.g., if the
+  // embedder does not support TabRestoreServiceDelegate functionality).
+  // Note that |host_desktop_type| is opaque to the component; the only values
+  // that will be passed here are those that have been passed *in* to the
+  // component from the embedder via TabRestoreService.
+  virtual TabRestoreServiceDelegate* CreateTabRestoreServiceDelegate(
+      int host_desktop_type,
+      const std::string& app_name) = 0;
+
+  // Returns the TabRestoreServiceDelegate instance that is associated with
+  // |contents|, or null if there is no such instance.
+  // TODO(blundell): Replace the usage of WebContents here with the cross-
+  // platform interface that will abstract it. crbug.com/530174
+  virtual TabRestoreServiceDelegate*
+  FindTabRestoreServiceDelegateForWebContents(
+      const content::WebContents* contents) = 0;
+
+  // Returns the TabRestoreServiceDelegate instance that is associated with
+  // |desired_id| and |host_desktop_type|, or null if there is no such instance.
+  // Note that |host_desktop_type| is opaque to the component; the only values
+  // that will be passed here are those that have been passed *in* to the
+  // component from the embedder via TabRestoreService.
+  virtual TabRestoreServiceDelegate* FindTabRestoreServiceDelegateWithID(
+      SessionID::id_type desired_id,
+      int host_desktop_type) = 0;
+
   // Returns whether a given URL should be tracked for restoring.
   virtual bool ShouldTrackURLForRestore(const GURL& url) = 0;
 
   // Get the sequenced worker pool for running tasks on the backend thread as
   // long as the system is not shutting down.
   virtual base::SequencedWorkerPool* GetBlockingPool() = 0;
 
   // Returns the path of the directory to save state into.
   virtual base::FilePath GetPathToSaveTo() = 0;
 
@@ skipping 10 matching lines @@
                               base::CancelableTaskTracker* tracker) = 0;
 
   // Called when a tab is restored. |url| is the URL that the tab is currently
   // visiting.
   virtual void OnTabRestored(const GURL& url) {}
 };
 
 }  // namespace sessions
 
 #endif  // COMPONENTS_SESSIONS_CORE_TAB_RESTORE_SERVICE_CLIENT_H_