[DevTools] Remove unnecessary checks for project types.

third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js

 /*
  * Copyright (C) 2011 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 100 matching lines @@
     }
 
     return result;
   }
 
   _showBlackboxInfobarIfNeeded() {
     var uiSourceCode = this.uiSourceCode();
     if (!uiSourceCode.contentType().hasScripts())
       return;
     var projectType = uiSourceCode.project().type();
-    if (projectType === Workspace.projectTypes.Snippets)
-      return;
     if (!Bindings.blackboxManager.isBlackboxedUISourceCode(uiSourceCode)) {
       this._hideBlackboxInfobar();
       return;
     }
 
     if (this._blackboxInfobar)
       this._blackboxInfobar.dispose();
 
     var infobar = new UI.Infobar(UI.Infobar.Type.Warning, Common.UIString('This script is blackboxed in debugger'));
     this._blackboxInfobar = infobar;
@@ skipping 1189 matching lines @@
     if (!this.bookmark)
       return;
     this.bookmark.clear();
     this.bookmark = null;
   }
 };
 
 Sources.JavaScriptSourceFrame.BreakpointDecoration._decorationSymbol = Symbol('decoration');
 Sources.JavaScriptSourceFrame.BreakpointDecoration.bookmarkSymbol = Symbol('bookmark');
 Sources.JavaScriptSourceFrame.BreakpointDecoration._elementSymbolForTest = Symbol('element');