Web Inspector: Address some ESLint warnings

Web Inspector: Address some ESLint warnings
https://bugs.webkit.org/show_bug.cgi?id=188824

Reviewed by Matt Baker.

* .eslintrc:
* UserInterface/Base/Platform.js:
* UserInterface/Controllers/AuditManager.js:
* UserInterface/Controllers/BasicBlockAnnotator.js:
* UserInterface/Controllers/CallFrameTreeController.js:
* UserInterface/Controllers/HARBuilder.js:
* UserInterface/Models/AuditReport.js:
* UserInterface/Models/AuditResult.js:
* UserInterface/Models/AuditTestCase.js:
* UserInterface/Models/AuditTestSuite.js:
* UserInterface/Models/Cookie.js:
* UserInterface/Models/SourceCodePosition.js:
* UserInterface/Test/FrontendTestHarness.js:
* UserInterface/Test/TestSuite.js:
* UserInterface/Views/CanvasContentView.js:
* UserInterface/Views/CollectionContentView.js:
* UserInterface/Views/ContentBrowser.js:
* UserInterface/Views/CookieStorageContentView.js:
* UserInterface/Views/DataGrid.js:
* UserInterface/Views/DatabaseTableContentView.js:
* UserInterface/Views/FindBanner.js:
* UserInterface/Views/JSONResourceContentView.js:
* UserInterface/Views/LogContentView.js:
* UserInterface/Views/ResourceSidebarPanel.js:
* UserInterface/Views/SourceCodeTextEditor.js:
* UserInterface/Views/SpreadsheetTextField.js:
* UserInterface/Workers/Formatter/FormatterUtilities.js:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@235873 268f45cc-cd09-0410-ab3c-d52691b4dbfc