Remove resource_context.h include from resource_loader.cc.

content/public/browser/resource_dispatcher_host_delegate.h

Index: content/public/browser/resource_dispatcher_host_delegate.h
diff --git a/content/public/browser/resource_dispatcher_host_delegate.h b/content/public/browser/resource_dispatcher_host_delegate.h
index f01c6c5626a950005d34a1cf0f7b28b89b84ebb3..3acfb1a3fa070de636cf481651e1c7abd7b9bd1b 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_delegate.h
@@ -23,6 +23,7 @@ class Sender;
 
 namespace net {
 class AuthChallengeInfo;
+class ClientCertStore;
 class URLRequest;
 }
 
@@ -136,8 +137,11 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
   // called for navigation requests.
   virtual NavigationData* GetNavigationData(net::URLRequest* request) const;
 
+  // Get platform ClientCertStore. May return nullptr.
+  virtual std::unique_ptr<net::ClientCertStore> CreateClientCertStore(
+      ResourceContext* resource_context);
+
  protected:
-  ResourceDispatcherHostDelegate();
   virtual ~ResourceDispatcherHostDelegate();
 };