DevTools: introduce object previews experiment

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 553 matching lines @@
     if (!executionContext)
       return;
     var callFrame = UI.context.flavor(SDK.DebuggerModel.CallFrame);
     if (!callFrame)
       return;
 
     var localScope = callFrame.localScope();
     var functionLocation = callFrame.functionLocation();
     if (localScope && functionLocation) {
       Sources.SourceMapNamesResolver.resolveScopeInObject(localScope)
-          .getAllProperties(false, this._prepareScopeVariables.bind(this, callFrame));
+          .getAllProperties(false, false, this._prepareScopeVariables.bind(this, callFrame));
     }
 
     if (this._clearValueWidgetsTimer) {
       clearTimeout(this._clearValueWidgetsTimer);
       delete this._clearValueWidgetsTimer;
     }
   }
 
   /**
    * @param {!SDK.DebuggerModel.CallFrame} callFrame
@@ skipping 97 matching lines @@
         if (namesPerLine.get(i - 1) && namesPerLine.get(i - 1).has(name))
           continue;  // Only render name once in the given continuous block.
         if (renderedNameCount)
           widget.createTextChild(', ');
         var nameValuePair = widget.createChild('span');
         widget.__nameToToken.set(name, nameValuePair);
         nameValuePair.createTextChild(name + ' = ');
         var value = valuesMap.get(name);
         var propertyCount = value.preview ? value.preview.properties.length : 0;
         var entryCount = value.preview && value.preview.entries ? value.preview.entries.length : 0;
-        if (value.preview && propertyCount + entryCount < 10)
-          formatter.appendObjectPreview(nameValuePair, value.preview);
-        else
-          nameValuePair.appendChild(Components.ObjectPropertiesSection.createValueElement(value, false));
+        if (value.preview && propertyCount + entryCount < 10) {
+          formatter.appendObjectPreview(nameValuePair, value.preview, false /* isEntry */);
+        } else {
+          nameValuePair.appendChild(Components.ObjectPropertiesSection.createValueElement(
+              value, false /* wasThrown */, false /* showPreview */));
+        }
         ++renderedNameCount;
       }
 
       var widgetChanged = true;
       if (oldWidget) {
         widgetChanged = false;
         for (var name of widget.__nameToToken.keys()) {
           var oldText = oldWidget.__nameToToken.get(name) ? oldWidget.__nameToToken.get(name).textContent : '';
           var newText = widget.__nameToToken.get(name) ? widget.__nameToToken.get(name).textContent : '';
           if (newText !== oldText) {
@@ skipping 666 matching lines @@
   hide() {
     if (!this.bookmark)
       return;
     this.bookmark.clear();
     this.bookmark = null;
   }
 };
 
 Sources.JavaScriptSourceFrame.BreakpointDecoration.bookmarkSymbol = Symbol('bookmark');
 Sources.JavaScriptSourceFrame.BreakpointDecoration._elementSymbolForTest = Symbol('element');