DevTools: Remove unused variables. Disallow unused variables with eslint

third_party/WebKit/Source/devtools/front_end/Tests.js

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 284 matching lines @@
     // Wait until all scripts are added to the debugger.
     this.takeControl();
   };
 
   /**
    * Tests that scripts are not duplicaed on Scripts tab switch.
    */
   TestSuite.prototype.testNoScriptDuplicatesOnPanelSwitch = function() {
     var test = this;
 
-    // There should be two scripts: one for the main page and another
-    // one which is source of console API(see
-    // InjectedScript._ensureCommandLineAPIInstalled).
-    var expectedScriptsCount = 2;
-    var parsedScripts = [];
-
     function switchToElementsTab() {
       test.showPanel('elements').then(function() {
         setTimeout(switchToScriptsTab, 0);
       });
     }
 
     function switchToScriptsTab() {
       test.showPanel('sources').then(function() {
         setTimeout(checkScriptsPanel, 0);
       });
@@ skipping 245 matching lines @@
     this.evaluateInConsole_('globalVar', didEvaluateInConsole.bind(this));
     this.takeControl();
   };
 
   TestSuite.prototype.testPauseInSharedWorkerInitialization1 = function() {
     // Make sure the worker is loaded.
     this.takeControl();
     this._waitForTargets(2, callback.bind(this));
 
     function callback() {
-      var target = SDK.targetManager.targets(SDK.Target.Capability.JS)[0];
       InspectorBackendClass.deprecatedRunAfterPendingDispatches(this.releaseControl.bind(this));
     }
   };
 
   TestSuite.prototype.testPauseInSharedWorkerInitialization2 = function() {
     this.takeControl();
     this._waitForTargets(2, callback.bind(this));
 
     function callback() {
       var target = SDK.targetManager.targets(SDK.Target.Capability.JS)[0];
@@ skipping 523 matching lines @@
       if (runtimeModel.executionContexts().length >= n)
         callback.call(null);
       else
         this.addSniffer(SDK.RuntimeModel.prototype, '_executionContextCreated', checkForExecutionContexts.bind(this));
     }
   };
 
 
   window.uiTests = new TestSuite(window.domAutomationController);
 })(window);