Remove resource_context.h include from resource_loader.cc.

content/browser/loader/resource_loader_delegate.h

Index: content/browser/loader/resource_loader_delegate.h
diff --git a/content/browser/loader/resource_loader_delegate.h b/content/browser/loader/resource_loader_delegate.h
index 38c8a38bf7a8ab995ddd778b694b28d80703a183..098d3911c3c2432fdff9ebc97038eeb667550352 100644
--- a/content/browser/loader/resource_loader_delegate.h
+++ b/content/browser/loader/resource_loader_delegate.h
@@ -9,6 +9,7 @@
 
 namespace net {
 class AuthChallengeInfo;
+class ClientCertStore;
 }
 
 namespace content {
@@ -33,6 +34,10 @@ class CONTENT_EXPORT ResourceLoaderDelegate {
   // 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() {}
 };