[Extensions] Remove "show button" UI from chrome://extensions

chrome/browser/resources/extensions/extension_list.js

Index: chrome/browser/resources/extensions/extension_list.js
diff --git a/chrome/browser/resources/extensions/extension_list.js b/chrome/browser/resources/extensions/extension_list.js
index df40e770919c07ebd26ca22383aa53df8e2e80f3..235c75809788a16f6dc75e27e59c8ee0566614f2 100644
--- a/chrome/browser/resources/extensions/extension_list.js
+++ b/chrome/browser/resources/extensions/extension_list.js
@@ -481,14 +481,6 @@ cr.define('extensions', function() {
         e.preventDefault();
       });
 
-      // The 'Show Browser Action' button.
-      wrapper.setupColumn('showButton', '.show-button', 'click', function(e) {
-        chrome.developerPrivate.updateExtensionConfiguration({
-          extensionId: extension.id,
-          showActionButton: true
-        });
-      });
-
       // The 'allow in incognito' checkbox.
       wrapper.setupColumn('incognito', '.incognito-control input', 'change',
                           function(e) {
@@ -631,10 +623,6 @@ cr.define('extensions', function() {
       this.setText_(wrapper, '.blacklist-text', extension.blacklistText || '');
       this.setText_(wrapper, '.extension-description', extension.description);
 
-      // The 'Show Browser Action' button.
-      this.updateVisibility_(wrapper, '.show-button',
-                             isActive && extension.actionButtonHidden);
-
       // The 'allow in incognito' checkbox.
       this.updateVisibility_(wrapper, '.incognito-control',
                              isActive && this.incognitoAvailable_,