Fix tab restore for view-source Chrome extension pages.

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 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_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 74 matching lines @@
   GURL GetEffectiveURL(content::BrowserContext* browser_context,
                        const GURL& url) override;
   bool ShouldUseProcessPerSite(content::BrowserContext* browser_context,
                                const GURL& effective_url) override;
   bool DoesSiteRequireDedicatedProcess(content::BrowserContext* browser_context,
                                        const GURL& effective_site_url) override;
   bool ShouldLockToOrigin(content::BrowserContext* browser_context,
                           const GURL& effective_site_url) override;
   void GetAdditionalWebUISchemes(
       std::vector<std::string>* additional_schemes) override;
+  void GetAdditionalViewSourceSchemes(
+      std::vector<std::string>* additional_schemes) override;
   bool LogWebUIUrl(const GURL& web_ui_url) const override;
   bool IsHandledURL(const GURL& url) override;
   bool CanCommitURL(content::RenderProcessHost* process_host,
                     const GURL& url) override;
   bool ShouldAllowOpenURL(content::SiteInstance* site_instance,
                           const GURL& url) override;
   void OverrideNavigationParams(content::SiteInstance* site_instance,
                                 ui::PageTransition* transition,
                                 bool* is_renderer_initiated,
                                 content::Referrer* referrer) override;
@@ skipping 277 matching lines @@
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_