DevTools: Remove redundant dependency on target from TimelineFrameModel

Source/devtools/front_end/sdk/PaintProfiler.js

 /*
  * Copyright (C) 2013 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 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /**
  * @constructor
- * @param {!WeakReference.<!WebInspector.Target>} weakTarget
+ * @param {!WebInspector.Target} target
  * @param {string} snapshotId
  */
-WebInspector.PaintProfilerSnapshot = function(weakTarget, snapshotId)
+WebInspector.PaintProfilerSnapshot = function(target, snapshotId)
 {
-    this._weakTarget = weakTarget;
+    this._target = target;
     this._id = snapshotId;
 }
 
 /**
  * @param {!WebInspector.Target} target
  * @param {string} encodedPicture
  * @param {function(?WebInspector.PaintProfilerSnapshot)} callback
  */
 WebInspector.PaintProfilerSnapshot.load = function(target, encodedPicture, callback)
 {
-    var wrappedCallback = InspectorBackend.wrapClientCallback(callback, "LayerTreeAgent.loadSnapshot(): ", WebInspector.PaintProfilerSnapshot.bind(null, target.weakReference()));
+    var wrappedCallback = InspectorBackend.wrapClientCallback(callback, "LayerTreeAgent.loadSnapshot(): ", WebInspector.PaintProfilerSnapshot.bind(null, target));
     target.layerTreeAgent().loadSnapshot(encodedPicture, wrappedCallback);
 }
 
 /**
  * @param {!Array.<!WebInspector.RawPaintProfilerLogItem>} log
  * @return {!Array.<!WebInspector.PaintProfilerLogItem>}
  */
 WebInspector.PaintProfilerSnapshot._processAnnotations = function(log)
 {
     var result = [];
@@ skipping 33 matching lines @@
         default:
             result.push(new WebInspector.PaintProfilerLogItem(log[i], i, commentGroupStack.peekLast()));
         }
     }
     return result;
 }
 
 WebInspector.PaintProfilerSnapshot.prototype = {
     dispose: function()
     {
-        var target = this._weakTarget.get();
-        if (target)
-            target.layerTreeAgent().releaseSnapshot(this._id);
+        this._target.layerTreeAgent().releaseSnapshot(this._id);
     },
 
     /**
-     * @return {?WebInspector.Target}
+     * @return {!WebInspector.Target}
      */
     target: function()
     {
-        return this._weakTarget.get();
+        return this._target;
     },
 
     /**
      * @param {?number} firstStep
      * @param {?number} lastStep
      * @param {?number} scale
      * @param {function(string=)} callback
      */
     requestImage: function(firstStep, lastStep, scale, callback)
     {
-        var target = this._weakTarget.get();
-        if (!target) {
-            callback();
-            return;
-        }
         var wrappedCallback = InspectorBackend.wrapClientCallback(callback, "LayerTreeAgent.replaySnapshot(): ");
-        target.layerTreeAgent().replaySnapshot(this._id, firstStep || undefined, lastStep || undefined, scale || 1.0, wrappedCallback);
+        this._target.layerTreeAgent().replaySnapshot(this._id, firstStep || undefined, lastStep || undefined, scale || 1.0, wrappedCallback);
     },
 
     /**
      * @param {function(!Array.<!LayerTreeAgent.PaintProfile>=)} callback
      */
     profile: function(callback)
     {
-        var target = this._weakTarget.get();
-        if (!target) {
-            callback();
-            return;
-        }
         var wrappedCallback = InspectorBackend.wrapClientCallback(callback, "LayerTreeAgent.profileSnapshot(): ");
-        target.layerTreeAgent().profileSnapshot(this._id, 5, 1, wrappedCallback);
+        this._target.layerTreeAgent().profileSnapshot(this._id, 5, 1, wrappedCallback);
     },
 
     /**
      * @param {function(!Array.<!WebInspector.PaintProfilerLogItem>=)} callback
      */
     commandLog: function(callback)
     {
-        var target = this._weakTarget.get();
-        if (!target) {
-            callback();
-            return;
-        }
         /**
          * @param {?string} error
          * @param {!Array.<!WebInspector.RawPaintProfilerLogItem>} log
          */
         function callbackWrapper(error, log)
         {
             if (error) {
                 console.error("LayerTreeAgent.snapshotCommandLog(): " + error);
                 callback();
                 return;
             }
             callback(WebInspector.PaintProfilerSnapshot._processAnnotations(log));
         }
 
-        target.layerTreeAgent().snapshotCommandLog(this._id, callbackWrapper);
+        this._target.layerTreeAgent().snapshotCommandLog(this._id, callbackWrapper);
     }
 };
 
 /**
  * @typedef {!{method: string, params: Array.<Object.<string, *>>}}
  */
 WebInspector.RawPaintProfilerLogItem;
 
 /**
  * @constructor
@@ skipping 14 matching lines @@
      * @return {number}
      */
     nodeId: function()
     {
         if (!this.annotations)
             return 0;
         var inspectorId = this.annotations["INSPECTOR_ID"];
         return Number(inspectorId);
     }
 }