Remove resource_context.h include from resource_loader.cc.

content/browser/loader/resource_loader_delegate.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 CONTENT_BROWSER_LOADER_RESOURCE_LOADER_DELEGATE_H_
 #define CONTENT_BROWSER_LOADER_RESOURCE_LOADER_DELEGATE_H_
 
 #include "content/common/content_export.h"
 
 namespace net {
 class AuthChallengeInfo;
+class ClientCertStore;
 }
 
 namespace content {
 class ResourceDispatcherHostLoginDelegate;
 class ResourceLoader;
 
 class CONTENT_EXPORT ResourceLoaderDelegate {
  public:
   virtual ResourceDispatcherHostLoginDelegate* CreateLoginDelegate(
       ResourceLoader* loader,
       net::AuthChallengeInfo* auth_info) = 0;
 
   virtual bool HandleExternalProtocol(ResourceLoader* loader,
                                       const GURL& url) = 0;
 
   virtual void DidStartRequest(ResourceLoader* loader) = 0;
   virtual void DidReceiveRedirect(ResourceLoader* loader,
                                   const GURL& new_url) = 0;
   virtual void DidReceiveResponse(ResourceLoader* loader) = 0;
 
   // This method informs the delegate that the loader is done, and the loader
   // expects to be destroyed as a side-effect of this call.
   virtual void DidFinishLoading(ResourceLoader* loader) = 0;
 
+  // Get platform ClientCertStore. May return nullptr.
+  virtual std::unique_ptr<net::ClientCertStore> CreateClientCertStore(
+      ResourceLoader* loader) = 0;
+
  protected:
   virtual ~ResourceLoaderDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_LOADER_DELEGATE_H_