Merge "Reset the Experimental WebView property per build" into klp-dev

 */

public final class WebViewFactory {

    private static final boolean DEFAULT_TO_EXPERIMENTAL_WEBVIEW = true;

    // REMEMBER: property names must be <= 31 chars total.

    private static final String EXPERIMENTAL_PROPERTY_DEFAULT_OFF = "persist.sys.webview.exp";

    private static final String EXPERIMENTAL_PROPERTY_DEFAULT_ON  = "persist.sys.webview.exp_on";

    private static final String EXPERIMENTAL_PROPERTY_DEFAULT_ON =

            "persist.sys.webview." + Build.ID;

    // Modify the persisted property name when the experiment is on-by-default, so that any user

    // setting override lives in a different property namespace.

    private static final String WEBVIEW_EXPERIMENTAL_PROPERTY = DEFAULT_TO_EXPERIMENTAL_WEBVIEW ?

    // Modify the persisted property name when the new webview is on-by-default, so that any user

    // setting override only lives as long as that build.

    private static final String LONG_PROPERTY_NAME = DEFAULT_TO_EXPERIMENTAL_WEBVIEW ?

            EXPERIMENTAL_PROPERTY_DEFAULT_ON : EXPERIMENTAL_PROPERTY_DEFAULT_OFF;

    private static final String WEBVIEW_EXPERIMENTAL_PROPERTY =

            LONG_PROPERTY_NAME.length() > SystemProperties.PROP_NAME_MAX ?

            LONG_PROPERTY_NAME.substring(0, SystemProperties.PROP_NAME_MAX) : LONG_PROPERTY_NAME;

    private static final String FORCE_PROVIDER_PROPERTY = "webview.force_provider";

    private static final String FORCE_PROVIDER_PROPERTY_VALUE_CHROMIUM = "chromium";

    /** @hide */

    public static void setUseExperimentalWebView(boolean enable) {

        SystemProperties.set(WebViewFactory.WEBVIEW_EXPERIMENTAL_PROPERTY,

                enable ? "true" : "false");

        SystemProperties.set(WEBVIEW_EXPERIMENTAL_PROPERTY, enable ? "true" : "false");

        Log.i(LOGTAG, "Use Experimental WebView changed: "

                + SystemProperties.get(WebViewFactory.WEBVIEW_EXPERIMENTAL_PROPERTY, ""));

    }

            DEFAULT_TO_EXPERIMENTAL_WEBVIEW);

    }

    /** @hide */

    public static boolean isUseExperimentalWebViewSet() {

        return !SystemProperties.get(WEBVIEW_EXPERIMENTAL_PROPERTY).isEmpty();

    }

    static WebViewFactoryProvider getProvider() {

        synchronized (sProviderLock) {

            // For now the main purpose of this function (and the factory abstraction) is to keep