PlzNavigate: store POST data in the FrameNavigationEntry

content/browser/frame_host/navigator.h

Index: content/browser/frame_host/navigator.h
diff --git a/content/browser/frame_host/navigator.h b/content/browser/frame_host/navigator.h
index ce1c97dec992b8a9faf4735766f0c8de53dd6e70..34f01a02547076db891d4ea2761ad6b22e7173f4 100644
--- a/content/browser/frame_host/navigator.h
+++ b/content/browser/frame_host/navigator.h
@@ -9,6 +9,7 @@
 #include "base/time/time.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/common/content_export.h"
+#include "content/common/resource_request_body.h"
 #include "content/public/browser/navigation_controller.h"
 #include "ui/base/window_open_disposition.h"
 
@@ -29,7 +30,6 @@ class NavigationControllerImpl;
 class NavigationEntryImpl;
 class NavigationRequest;
 class RenderFrameHostImpl;
-class ResourceRequestBody;
 class StreamHandle;
 struct BeginNavigationParams;
 struct CommonNavigationParams;
@@ -74,7 +74,8 @@ class CONTENT_EXPORT Navigator : public base::RefCounted<Navigator> {
   // The RenderFrameHostImpl has committed a navigation.
   virtual void DidNavigate(
       RenderFrameHostImpl* render_frame_host,
-      const FrameHostMsg_DidCommitProvisionalLoad_Params& params) {}
+      const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
+      scoped_refptr<ResourceRequestBody> post_data) {}
 
   // Called by the NavigationController to cause the Navigator to navigate
   // to the current pending entry. The NavigationController should be called