Create a content::ResourceContext.

chrome/test/testing_profile.cc

Index: chrome/test/testing_profile.cc
diff --git a/chrome/test/testing_profile.cc b/chrome/test/testing_profile.cc
index 468c051b71104730c861ed6668de158f1c83e131..0374422c2cab3763abc0bfe74b96afb5ca05bd33 100644
--- a/chrome/test/testing_profile.cc
+++ b/chrome/test/testing_profile.cc
@@ -46,6 +46,7 @@
 #include "content/browser/browser_thread.h"
 #include "content/browser/geolocation/geolocation_permission_context.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
+#include "content/browser/mock_resource_context.h"
 #include "content/common/notification_service.h"
 #include "net/base/cookie_monster.h"
 #include "net/url_request/url_request_context.h"
@@ -583,6 +584,10 @@ net::URLRequestContextGetter* TestingProfile::GetRequestContextForIsolatedApp(
   return GetRequestContext();
 }
 
+const content::ResourceContext& TestingProfile::GetResourceContext() {
+  return content::MockResourceContext::GetInstance();
+}
+
 FindBarState* TestingProfile::GetFindBarState() {
   if (!find_bar_state_.get())
     find_bar_state_.reset(new FindBarState());