Rewrite to WebExtensions API (#3)

background.js

@@ -0,0 +1,17 @@
+browser.webRequest.onBeforeSendHeaders.addListener(
+    onPageLoading,
+    { urls: ["<all_urls>"] }
+);
+
+function onPageLoading(e) {
+    if (e.type != "main_frame") {
+        return;
+    }
+
+    browser.cookies.get({url: e.url, name: "debug_start_session"}).then(cookie => {
+        if (!cookie) {
+            resetIcon();
+            clearDebugCookies(e.url);
+        }
+    });
+}

common.js

@@ -0,0 +1,90 @@
+function resetIcon() {
+    browser.browserAction.setIcon({path: "icons/debugmenu.gif"});
+}
+
+function clearDebugCookies(url) {
+    browser.cookies.remove({
+        url: url,
+        name: "debug_host"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_port"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_fastfile"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "start_debug"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "send_debug_header"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "send_sess_end"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_jit"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_stop"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "use_remote"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "no_remote"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "use_ssl"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "start_profile"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_coverage"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_session_id"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "debug_start_session"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "original_url"
+    });
+
+    browser.cookies.remove({
+        url: url,
+        name: "ZendDebuggerCookie"
+    });
+}