Capitalize background scripts

src/background/domains/global-mark.js

@@ -1,24 +0,0 @@
-export default class GlobalMark {
-  constructor(tabId, url, x, y) {
-    this.tabId0 = tabId;
-    this.url0 = url;
-    this.x0 = x;
-    this.y0 = y;
-  }
-
-  get tabId() {
-    return this.tabId0;
-  }
-
-  get url() {
-    return this.url0;
-  }
-
-  get x() {
-    return this.x0;
-  }
-
-  get y() {
-    return this.y0;
-  }
-}