PlzNavigate: make content unit tests work with browser side navigation

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index 16f9466dc2863e2a2a501fcf01d4dd1f57dac8c1..62e37e603b3e99cd26826e351aecf1e3a213800f 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -88,6 +88,11 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
   NavigationRequest* GetNavigationRequestForNodeForTesting(
       FrameTreeNode* frame_tree_node);
 
+  // PlzNavigate
+  // Returns whether there is an ongoing navigation waiting for the BeforeUnload
+  // event to execute in the renderer.

[nasko, 2015/01/17 00:22:01]

nit: s/renderer/renderer process/.

[clamy, 2015/01/19 17:29:19]

Done (note that the comment was moved to Navigator).

+  bool IsWaitingForBeforeUnloadACK(FrameTreeNode* frame_tree_node);
+
  private:
   // Holds data used to track browser side navigation metrics.
   struct NavigationMetricsData;