RenderView needs to know zoom level for loading pages.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 087cd75e2a4adf3622d2a000c478cc7cb4e8a640..69e2185b800ec7efd3c48c705dae16045f15d439 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4483,7 +4483,7 @@ void RenderFrameImpl::SendDidCommitProvisionalLoad(
       // If the zoom level is not found, then do nothing. In-page navigation
       // relies on not changing the zoom level in this case.
       if (host_zoom != render_view_->host_zoom_levels_.end())
-        render_view_->webview()->setZoomLevel(host_zoom->second);
+        render_view_->SetZoomLevel(host_zoom->second);
     }
 
     if (host_zoom != render_view_->host_zoom_levels_.end()) {