Move implementation of ChildProcessSecurityPolicyImpl to c/b/shared, and wrap in c/b

content/browser/child_process_security_policy_browsertest.cc

-// Copyright (c) 2012 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 <string>
-
-#include "base/files/file_path.h"
-#include "build/build_config.h"
-#include "content/browser/child_process_security_policy_impl.h"
-#include "content/browser/web_contents/web_contents_impl.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/common/result_codes.h"
-#include "content/public/test/content_browser_test.h"
-#include "content/public/test/content_browser_test_utils.h"
-#include "content/shell/browser/shell.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace content {
-
-class ChildProcessSecurityPolicyInProcessBrowserTest
-    : public ContentBrowserTest {
- public:
-  void SetUp() override {
-    EXPECT_EQ(
-      ChildProcessSecurityPolicyImpl::GetInstance()->security_state_.size(),
-          0U);
-    ContentBrowserTest::SetUp();
-  }
-
-  void TearDown() override {
-    EXPECT_EQ(
-      ChildProcessSecurityPolicyImpl::GetInstance()->security_state_.size(),
-          0U);
-    ContentBrowserTest::TearDown();
-  }
-};
-
-#if !defined(NDEBUG) && defined(OS_MACOSX)
-IN_PROC_BROWSER_TEST_F(ChildProcessSecurityPolicyInProcessBrowserTest, DISABLED_NoLeak) {
-#else
-IN_PROC_BROWSER_TEST_F(ChildProcessSecurityPolicyInProcessBrowserTest, NoLeak) {
-#endif
-  GURL url = GetTestUrl("", "simple_page.html");
-
-  NavigateToURL(shell(), url);
-  EXPECT_EQ(
-      ChildProcessSecurityPolicyImpl::GetInstance()->security_state_.size(),
-          1U);
-
-  WebContents* web_contents = shell()->web_contents();
-  web_contents->GetRenderProcessHost()->Shutdown(RESULT_CODE_KILLED, true);
-
-  web_contents->GetController().Reload(true);
-  EXPECT_EQ(
-      1U,
-      ChildProcessSecurityPolicyImpl::GetInstance()->security_state_.size());
-}
-
-}  // namespace content