DevTools: introduce object previews experiment

third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js

Index: third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js
diff --git a/third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js b/third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js
index aa0168a8ec215b41113e844aa554323dec5c780a..f04f1ea2427a5d0daff192040018026e990cdbd0 100644
--- a/third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js
+++ b/third_party/WebKit/Source/devtools/front_end/components/JavaScriptAutocomplete.js
@@ -102,7 +102,9 @@ Components.JavaScriptAutocomplete.completionsForExpression = function(expression
         return Promise.resolve(/** @type {?SDK.RemoteObject} */ (null));
       if (object.type !== 'object' || object.subtype !== 'proxy')
         return Promise.resolve(/** @type {?SDK.RemoteObject} */ (object));
-      return object.getOwnPropertiesPromise().then(extractTargetFromProperties).then(extractTarget);
+      return object.getOwnPropertiesPromise(false /* generatePreview */)
+          .then(extractTargetFromProperties)
+          .then(extractTarget);
     }
 
     /**
@@ -204,7 +206,9 @@ Components.JavaScriptAutocomplete.completionsForExpression = function(expression
     for (var i = 0; i < scopeChain.length; ++i) {
       var scope = scopeChain[i];
       var object = scope.object();
-      object.getAllProperties(false, propertiesCollected.bind(null, scope.typeName()));
+      object.getAllProperties(
+          false /* accessorPropertiesOnly */, false /* generatePreview */,
+          propertiesCollected.bind(null, scope.typeName()));
     }
   }