Fix some unit_tests under PlzNavigate

content/public/test/browser_side_navigation_test_utils.cc

Index: content/public/test/browser_side_navigation_test_utils.cc
diff --git a/content/test/browser_side_navigation_test_utils.cc b/content/public/test/browser_side_navigation_test_utils.cc
similarity index 76%
rename from content/test/browser_side_navigation_test_utils.cc
rename to content/public/test/browser_side_navigation_test_utils.cc
index 0dbd60b6e25f11198eebd0ad274575609e2c80a2..ca895b54b483db73fd658df796ddcedbcc176048 100644
--- a/content/test/browser_side_navigation_test_utils.cc
+++ b/content/public/test/browser_side_navigation_test_utils.cc
@@ -1,19 +1,23 @@
-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Copyright 2014 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 "content/test/browser_side_navigation_test_utils.h"
+#include "content/public/test/browser_side_navigation_test_utils.h"
 
 #include "base/command_line.h"
 #include "base/guid.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
+#include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/streams/stream.h"
 #include "content/browser/streams/stream_registry.h"
+#include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/stream_handle.h"
+#include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_switches.h"
 #include "content/test/test_navigation_url_loader_factory.h"
+#include "content/test/test_render_frame_host.h"
 
 namespace content {
 
@@ -71,4 +75,13 @@ void EnableBrowserSideNavigation() {
       switches::kEnableBrowserSideNavigation);
 }
 
+void SimulateCurrentRenderFrameHostUnloading(RenderFrameHost* rfh) {
+  bool browser_side_navigation = IsBrowserSideNavigationEnabled();
+  TestRenderFrameHost* main_frame = static_cast<TestRenderFrameHost*>(rfh);
+  if (!browser_side_navigation ||
+      main_frame->frame_tree_node()->navigation_request()) {
+    main_frame->PrepareForCommit();

[scottmg, 2016/08/30 18:15:31]

I had to move this file into content/public/test so that it could use
FrameTreeNode::PrepareForCommit().

+  }
+}
+
 }  // namespace content