PlzNavigate: store POST data in the FrameNavigationEntry

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index d2931d3abc993e1643149ee9dd5ce511a381ec72..fbf05305dea7e26216c00527b438abb91b6d03bc 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -147,6 +147,7 @@ class RenderFrameObserver;
 class RenderViewImpl;
 class RenderWidget;
 class RenderWidgetFullscreenPepper;
+class ResourceRequestBody;
 class ScreenOrientationDispatcher;
 class UserMediaClientImpl;
 class WakeLockDispatcher;
@@ -801,7 +802,8 @@ class CONTENT_EXPORT RenderFrameImpl
   void OnCommitNavigation(const ResourceResponseHead& response,
                           const GURL& stream_url,
                           const CommonNavigationParams& common_params,
-                          const RequestNavigationParams& request_params);
+                          const RequestNavigationParams& request_params,
+                          scoped_refptr<ResourceRequestBody> post_data);
   void OnFailedNavigation(const CommonNavigationParams& common_params,
                           const RequestNavigationParams& request_params,
                           bool has_stale_copy_in_cache,
@@ -849,7 +851,8 @@ class CONTENT_EXPORT RenderFrameImpl
       const CommonNavigationParams& common_params,
       const StartNavigationParams& start_params,
       const RequestNavigationParams& request_params,
-      std::unique_ptr<StreamOverrideParameters> stream_params);
+      std::unique_ptr<StreamOverrideParameters> stream_params,
+      scoped_refptr<ResourceRequestBody> body);
 
   // Update current main frame's encoding and send it to browser window.
   // Since we want to let users see the right encoding info from menu