DevTools: drastically simplify UISourceCode.checkContentUpdated

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

 /*
  * Copyright (C) 2012 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 112 matching lines @@
    */
   uiSourceCode() {
     return this._uiSourceCode;
   }
 
   /**
    * @override
    */
   wasShown() {
     super.wasShown();
-    this._boundWindowFocused = this._windowFocused.bind(this);
-    this.element.ownerDocument.defaultView.addEventListener('focus', this._boundWindowFocused, false);
-    this._checkContentUpdated();
     // We need CodeMirrorTextEditor to be initialized prior to this call as it calls |cursorPositionToCoordinates| internally. @see crbug.com/506566
     setImmediate(this._updateBucketDecorations.bind(this));
   }
 
   /**
    * @override
    */
   willHide() {
     super.willHide();
     UI.context.setFlavor(Sources.UISourceCodeFrame, null);
-    this.element.ownerDocument.defaultView.removeEventListener('focus', this._boundWindowFocused, false);
-    delete this._boundWindowFocused;
     this._uiSourceCode.removeWorkingCopyGetter();
   }
 
   /**
    * @return {boolean}
    */
   _canEditSource() {
     if (Persistence.persistence.binding(this._uiSourceCode))
       return true;
     if (this._uiSourceCode.project().canSetFileContent())
       return true;
     if (this._uiSourceCode.project().isServiceProject())
       return false;
     return this._uiSourceCode.contentType() !== Common.resourceTypes.Document;
   }
 
-  _windowFocused(event) {
-    this._checkContentUpdated();
-  }
-
-  _checkContentUpdated() {
-    if (!this.loaded || !this.isShowing())
-      return;
-    this._uiSourceCode.checkContentUpdated(true);
-  }
-
   commitEditing() {
     if (!this._uiSourceCode.isDirty())
       return;
 
     this._muteSourceCodeEvents = true;
     this._uiSourceCode.commitWorkingCopy();
     delete this._muteSourceCodeEvents;
   }
 
   /**
@@ skipping 510 matching lines @@
 
 /**
  * @param {!Workspace.UISourceCode.Message} a
  * @param {!Workspace.UISourceCode.Message} b
  * @return {number}
  */
 Workspace.UISourceCode.Message.messageLevelComparator = function(a, b) {
   return Workspace.UISourceCode.Message._messageLevelPriority[a.level()] -
       Workspace.UISourceCode.Message._messageLevelPriority[b.level()];
 };