<webview>: Do not show blocked_by_client error page for guest.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 3002d78840af4ef82aebfdfcdb4829203b526a85..78871021de87ad29c0faa0b37434edeeee6a825f 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -3653,6 +3653,12 @@ void RenderViewImpl::didFailProvisionalLoad(WebFrame* frame,
   if (error.reason == net::ERR_ABORTED)
     return;
 
+  // Don't display "client blocked" error page if browser has asked us not to.
+  if (error.reason == net::ERR_BLOCKED_BY_CLIENT &&
+      renderer_preferences_.disable_client_blocked_error_page) {
+    return;
+  }
+
   if (RenderThreadImpl::current()->layout_test_mode())
     return;