Create a content::ResourceContext.

chrome/browser/profiles/profile.cc

Index: chrome/browser/profiles/profile.cc
diff --git a/chrome/browser/profiles/profile.cc b/chrome/browser/profiles/profile.cc
index 1bd2bd9031523218c0a557dcbd49ce6ee8910861..4781dd7b487e7260ddcee349ff89e3727925d3e7 100644
--- a/chrome/browser/profiles/profile.cc
+++ b/chrome/browser/profiles/profile.cc
@@ -428,15 +428,19 @@ class OffTheRecordProfileImpl : public Profile,
     return io_data_.GetMainRequestContextGetter();
   }
 
-  net::URLRequestContextGetter* GetRequestContextForExtensions() {
+  virtual net::URLRequestContextGetter* GetRequestContextForExtensions() {
     return io_data_.GetExtensionsRequestContextGetter();
   }
 
-  net::URLRequestContextGetter* GetRequestContextForIsolatedApp(
+  virtual net::URLRequestContextGetter* GetRequestContextForIsolatedApp(
       const std::string& app_id) {
     return io_data_.GetIsolatedAppRequestContextGetter(app_id);
   }
 
+  virtual content::ResourceContextGetter* GetResourceContext() {
+    return io_data_.GetResourceContextGetter();
+  }
+
   virtual net::SSLConfigService* GetSSLConfigService() {
     return profile_->GetSSLConfigService();
   }