Pull ChildProcessSecurityPolicyImpl out to shared subfolder

content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <deque>
 #include <tuple>
 
-#include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/media/webrtc/webrtc_identity_store.h"
 #include "content/browser/renderer_host/media/webrtc_identity_service_host.h"
+#include "content/browser/shared/child_process_security_policy_helper.h"
 #include "content/common/media/webrtc_identity_messages.h"
 #include "content/public/test/mock_resource_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/test/test_content_browser_client.h"
 #include "ipc/ipc_message.h"
 #include "net/base/net_errors.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
@@ skipping 230 matching lines @@
 }
 
 // Verifies that we do not crash if we try to cancel a completed request.
 TEST_F(WebRTCIdentityServiceHostTest, TestCancelAfterRequestCompleted) {
   SendRequestToHost();
   store_->RunCompletionCallback(net::OK, kFakeCertificate, kFakePrivateKey);
   SendCancelRequestToHost();
 }
 
 }  // namespace content