[iOS] URL can be replaceState by blob URL in iOS Brave

How it was found

Summary:

URL can be replace by blob URL using function history.replaceState()

Products affected:

iOS brave version 1.3.1(17.02.14.11)

Steps To Reproduce:

• Add a html named "blob.html" which link is "http://192.168.1.111/blob.html"

• And its source is:

<script>
history.replaceState('','','blob:http://192.168.1.111/xxxx')
</script>

• then visit this page,you will find that URL has been replace by blob URL successfully!