DevTools: improve DevTools file watcher to send added and removed paths

chrome/browser/devtools/devtools_ui_bindings.h

 // Copyright 2014 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_DEVTOOLS_DEVTOOLS_UI_BINDINGS_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_UI_BINDINGS_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 159 matching lines @@
   void JsonReceived(const DispatchCallback& callback,
                     int result,
                     const std::string& message);
   void DevicesDiscoveryConfigUpdated();
   void SendPortForwardingStatus(const base::Value& status);
 
   // DevToolsFileHelper::Delegate overrides.
   void FileSystemAdded(
       const DevToolsFileHelper::FileSystem& file_system) override;
   void FileSystemRemoved(const std::string& file_system_path) override;
-  void FilePathsChanged(const std::vector<std::string>& file_paths) override;
+  void FilePathsChanged(const std::vector<std::string>& changed_paths,
+                        const std::vector<std::string>& added_paths,
+                        const std::vector<std::string>& removed_paths) override;
 
   // DevToolsFileHelper callbacks.
   void FileSavedAs(const std::string& url);
   void CanceledFileSaveAs(const std::string& url);
   void AppendedTo(const std::string& url);
   void IndexingTotalWorkCalculated(int request_id,
                                    const std::string& file_system_path,
                                    int total_work);
   void IndexingWorked(int request_id,
                       const std::string& file_system_path,
@@ skipping 36 matching lines @@
       embedder_message_dispatcher_;
   GURL url_;
   using PendingRequestsMap = std::map<const net::URLFetcher*, DispatchCallback>;
   PendingRequestsMap pending_requests_;
   base::WeakPtrFactory<DevToolsUIBindings> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsUIBindings);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_UI_BINDINGS_H_