DevTools: introduce object previews experiment

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

Index: third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js b/third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js
index 817a396fae00ec8d1c7d98d71718d6874d500120..b27be90238dc95281c1bad19a8880eb6896d8c23 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js
@@ -81,7 +81,7 @@ Sources.JavaScriptSourceFrame = class extends Sources.UISourceCodeFrame {
     this._valueWidgets = new Map();
     this.onBindingChanged();
     Bindings.debuggerWorkspaceBinding.addEventListener(
-          Bindings.DebuggerWorkspaceBinding.Events.SourceMappingChanged, this._onSourceMappingChanged, this);
+        Bindings.DebuggerWorkspaceBinding.Events.SourceMappingChanged, this._onSourceMappingChanged, this);
   }
 
   /**
@@ -571,7 +571,7 @@ Sources.JavaScriptSourceFrame = class extends Sources.UISourceCodeFrame {
     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));

[dgozman, 2017/01/13 02:55:42]

nit: please comment parameters.

[luoe, 2017/01/13 23:20:13]

Done.

     }
 
     if (this._clearValueWidgetsTimer) {
@@ -1294,7 +1294,7 @@ Sources.JavaScriptSourceFrame = class extends Sources.UISourceCodeFrame {
    */
   dispose() {
     Bindings.debuggerWorkspaceBinding.removeEventListener(
-          Bindings.DebuggerWorkspaceBinding.Events.SourceMappingChanged, this._onSourceMappingChanged, this);
+        Bindings.DebuggerWorkspaceBinding.Events.SourceMappingChanged, this._onSourceMappingChanged, this);
     this._breakpointManager.removeEventListener(
         Bindings.BreakpointManager.Events.BreakpointAdded, this._breakpointAdded, this);
     this._breakpointManager.removeEventListener(