Merge "It is possible that we may get a call from WebCore that the first...

Merge "It is possible that we may get a call from WebCore that the first layout has completed before we've successfully syncd the webview dimensions from Java to native and in this case, we end up syncing a height of 0 to WebKit. This causes hit detection to fail, as WebKit thinks we have a 0-height visible area. This patch fixes this scenario by syncing the height of the webview back to WebKit in the case that the first layout comes back before we've sent our dimensions."