Patch to follow.
Created attachment 85571 [details] Patch
Comment on attachment 85571 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=85571&action=review > Source/WebCore/inspector/InspectorRuntimeAgent.cpp:87 > + if (!injectedScript.setPropertyValue(objectId, propertyName, expression)) > + *errorString = "Failed setting value."; please generate the error in js function and propagate it to the top level.
Committed r80931: <http://trac.webkit.org/changeset/80931>