Show consent screen only when the browser is Firefox

[mrts]

WE2-789

[mrts]

As a result, only dist/firefox has the _locales and views directories and the following in the end of background.js:

    browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
        if (message.action) {
            onAction(message, sender).then(sendResponse);
        }
        else if (message.type) {
            onTokenSigningAction(message, sender).then(sendResponse);
        }
        return true;
    });
    async function showConsent() {
        const url = browser.runtime.getURL("views/installed.html");
        return await browser.tabs.create({ url, active: true });
    }
    browser.runtime.onInstalled.addListener(async ({ reason, temporary }) => {
        if (temporary)
            return;
        if (reason == "install") {
            await showConsent();
        }
    });

})();

Chrome background.js end looks as follows (does not contain showConsent() or browser.runtime.onInstalled.addListener():

    browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
        if (message.action) {
            onAction(message, sender).then(sendResponse);
        }
        else if (message.type) {
            onTokenSigningAction(message, sender).then(sendResponse);
        }
        return true;
    });

})();