Merge "Make sure access to WebView::mWebViewCore is synchronized."

            mCallbackProxy.setWebViewClient(null);

            mCallbackProxy.setWebChromeClient(null);

            // Tell WebViewCore to destroy itself

            synchronized (this) {

                WebViewCore webViewCore = mWebViewCore;

                mWebViewCore = null; // prevent using partial webViewCore

                webViewCore.destroy();

            }

            // Remove any pending messages that might not be serviced yet.

            mPrivateHandler.removeCallbacksAndMessages(null);

            mCallbackProxy.removeCallbacksAndMessages(null);

                cursorData(), 1000);

    }

    /* package */ WebViewCore getWebViewCore() {

    /* package */ synchronized WebViewCore getWebViewCore() {

        return mWebViewCore;

    }