Simplest backport of 117417.

content/public/browser/content_browser_client.h

 // Copyright (c) 2011 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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 115 matching lines @@
 
   // Returns whether all instances of the specified effective URL should be
   // rendered by the same process, rather than using process-per-site-instance.
   virtual bool ShouldUseProcessPerSite(BrowserContext* browser_context,
                                        const GURL& effective_url) = 0;
 
   // Returns whether a specified URL is to be considered the same as any
   // SiteInstance.
   virtual bool IsURLSameAsAnySiteInstance(const GURL& url) = 0;
 
+  // Returns whether a specified URL is handled by the embedder's internal
+  // protocol handlers.
+  virtual bool IsHandledURL(const GURL& url) = 0;
+
   // Returns whether a new view for a given |site_url| can be launched in a
   // given |process_host|.
   virtual bool IsSuitableHost(content::RenderProcessHost* process_host,
                               const GURL& site_url) = 0;
 
   // Called when a site instance is first associated with a process.
   virtual void SiteInstanceGotProcess(SiteInstance* site_instance) = 0;
 
   // Called from a site instance's destructor.
   virtual void SiteInstanceDeleting(SiteInstance* site_instance) = 0;
@@ skipping 215 matching lines @@
   // This is called on a worker thread.
   virtual
       crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate(
           const GURL& url) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_