[Devtools] Added frame grouping to network panel

third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js
index 42d7afb550c137e8f5cd232b92e63e878bb48440..088f36583caee731220481aca4302988db9683c5 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/ResourceTreeModel.js
@@ -162,12 +162,8 @@ SDK.ResourceTreeModel = class extends SDK.SDKModel {
     if (this._frames.has(frameId))
       return null;
 
-    var callFrames = null;
-    if (stackTrace && stackTrace.callFrames)
-      callFrames = stackTrace.callFrames;
-
     var parentFrame = parentFrameId ? (this._frames.get(parentFrameId) || null) : null;
-    var frame = new SDK.ResourceTreeFrame(this, parentFrame, frameId, null, callFrames);
+    var frame = new SDK.ResourceTreeFrame(this, parentFrame, frameId, null, stackTrace || null);
     if (frame.isMainFrame() && this.mainFrame) {
       // Navigation to the new backend process.
       this._frameDetached(this.mainFrame.id);
@@ -493,7 +489,7 @@ SDK.ResourceTreeFrame = class {
    * @param {?SDK.ResourceTreeFrame} parentFrame
    * @param {!Protocol.Page.FrameId} frameId
    * @param {?Protocol.Page.Frame} payload
-   * @param {?Array<!Protocol.Runtime.CallFrame>} creationStackTrace
+   * @param {?Protocol.Runtime.StackTrace} creationStackTrace
    */
   constructor(model, parentFrame, frameId, payload, creationStackTrace) {
     this._model = model;
@@ -582,6 +578,13 @@ SDK.ResourceTreeFrame = class {
   }
 
   /**
+   * @return {?Protocol.Runtime.StackTrace}
+   */
+  creationStackTrace() {
+    return this._creationStackTrace;
+  }
+
+  /**
    * @return {boolean}
    */
   isMainFrame() {