WebUI: Fix more violations of no-extra-semi lint rule.

chrome/browser/resources/pdf/zoom_manager.js

Index: chrome/browser/resources/pdf/zoom_manager.js
diff --git a/chrome/browser/resources/pdf/zoom_manager.js b/chrome/browser/resources/pdf/zoom_manager.js
index 25086938e3679e9082722cf07f78b0a1f75218bd..5ed2c74ac3941620ad59ab987f5b3b3cf598b0aa 100644
--- a/chrome/browser/resources/pdf/zoom_manager.js
+++ b/chrome/browser/resources/pdf/zoom_manager.js
@@ -86,13 +86,13 @@ class ZoomManager {
     // due to floating point error.
     return Math.abs(a - b) <= MIN_ZOOM_DELTA;
   }
-};
+}
 
 /**
  * InactiveZoomManager has no control over the browser's zoom
  * and does not respond to browser zoom changes.
  */
-class InactiveZoomManager extends ZoomManager {};
+class InactiveZoomManager extends ZoomManager {}
 
 /**
  * ActiveZoomManager controls the browser's zoom.
@@ -180,7 +180,7 @@ class ActiveZoomManager extends ZoomManager {
     // internal zoom is the total zoom.
     return totalZoom;
   }
-};
+}
 
 /**
  * This EmbeddedZoomManager responds to changes in the browser zoom,
@@ -196,4 +196,4 @@ class EmbeddedZoomManager extends ZoomManager {
     this.browserZoom_ = newZoom;
     this.viewport_.updateZoomFromBrowserChange(oldZoom);
   }
-};
+}