Fix front-end host creation upon navigation

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 25 matching lines @@
 class DevToolsUIBindings : public DevToolsEmbedderMessageDispatcher::Delegate,
                            public DevToolsAndroidBridge::DeviceCountListener,
                            public content::DevToolsAgentHostClient,
                            public net::URLFetcherDelegate,
                            public DevToolsFileHelper::Delegate {
  public:
   static DevToolsUIBindings* ForWebContents(
       content::WebContents* web_contents);
 
   static GURL SanitizeFrontendURL(const GURL& url);
+  static bool IsValidFrontendURL(const GURL& url);
 
   class Delegate {
    public:
     virtual ~Delegate() {}
     virtual void ActivateWindow() = 0;
     virtual void CloseWindow() = 0;
     virtual void Inspect(scoped_refptr<content::DevToolsAgentHost> host) = 0;
     virtual void SetInspectedPageBounds(const gfx::Rect& rect) = 0;
     virtual void InspectElementCompleted() = 0;
     virtual void SetIsDocked(bool is_docked) = 0;
@@ skipping 137 matching lines @@
   void IndexingWorked(int request_id,
                       const std::string& file_system_path,
                       int worked);
   void IndexingDone(int request_id, const std::string& file_system_path);
   void SearchCompleted(int request_id,
                        const std::string& file_system_path,
                        const std::vector<std::string>& file_paths);
   typedef base::Callback<void(bool)> InfoBarCallback;
   void ShowDevToolsConfirmInfoBar(const base::string16& message,
                                   const InfoBarCallback& callback);
-  void UpdateFrontendHost();
+  void UpdateFrontendHost(const GURL& url);
 
   // Extensions support.
   void AddDevToolsExtensionsToClient();
 
   class FrontendWebContentsObserver;
   std::unique_ptr<FrontendWebContentsObserver> frontend_contents_observer_;
 
   Profile* profile_;
   DevToolsAndroidBridge* android_bridge_;
   content::WebContents* web_contents_;
@@ skipping 18 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_