Create a content::ResourceContext.

content/browser/renderer_host/resource_dispatcher_host_unittest.cc

Index: content/browser/renderer_host/resource_dispatcher_host_unittest.cc
diff --git a/content/browser/renderer_host/resource_dispatcher_host_unittest.cc b/content/browser/renderer_host/resource_dispatcher_host_unittest.cc
index f94d2b2e67a5523eb16bb4666ab2eedb7ea3180c..5342de2855cb6fa073df88048693aaecd94ba770 100644
--- a/content/browser/renderer_host/resource_dispatcher_host_unittest.cc
+++ b/content/browser/renderer_host/resource_dispatcher_host_unittest.cc
@@ -10,6 +10,7 @@
 #include "chrome/common/render_messages.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/child_process_security_policy.h"
+#include "content/browser/mock_resource_context.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
 #include "content/browser/renderer_host/resource_handler.h"
@@ -130,6 +131,7 @@ class ForwardingFilter : public ResourceMessageFilter {
   explicit ForwardingFilter(IPC::Message::Sender* dest)
     : ResourceMessageFilter(ChildProcessInfo::GenerateChildProcessUniqueId(),
                             ChildProcessInfo::RENDER_PROCESS,
+                            content::MockResourceContext::GetInstance(),
                             NULL),
       dest_(dest) {
     OnChannelConnected(base::GetCurrentProcId());