Power profiler should check for the capability CanProfilePower

Source/devtools/front_end/timeline/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 353 matching lines @@
 
         this._captureStacksSetting = WebInspector.settings.createSetting("timelineCaptureStacks", true);
         panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Stacks"),
                                                                       this._captureStacksSetting,
                                                                       WebInspector.UIString("Capture JavaScript stack on every timeline event")));
         this._captureMemorySetting = WebInspector.settings.createSetting("timelineCaptureMemory", false);
         panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Memory"),
                                                                       this._captureMemorySetting,
                                                                       WebInspector.UIString("Capture memory information on every timeline event")));
         this._captureMemorySetting.addChangeListener(this._onModeChanged, this);
-        if (WebInspector.experimentsSettings.timelinePowerProfiler.isEnabled()) {
+        if (WebInspector.experimentsSettings.timelinePowerProfiler.isEnabled() &&
+            WebInspector.targetManager.mainTarget().hasCapability(WebInspector.Target.Capabilities.CanProfilePower)) {
             this._capturePowerSetting = WebInspector.settings.createSetting("timelineCapturePower", false);
             panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Power"),
                                                                           this._capturePowerSetting,
                                                                           WebInspector.UIString("Capture power information")));
             this._capturePowerSetting.addChangeListener(this._onModeChanged, this);
         }
         if (WebInspector.experimentsSettings.timelineOnTraceEvents.isEnabled() &&
             WebInspector.experimentsSettings.paintProfiler.isEnabled()) {
             this._captureLayersAndPicturesSetting = WebInspector.settings.createSetting("timelineCaptureLayersAndPictures", false);
             panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Paint"),
@@ skipping 220 matching lines @@
             this._addModeView(new WebInspector.TimelineFlameChart(this, this._tracingTimelineModel, this._frameModel()));
         else
             this._addModeView(this._timelineView());
 
         if (this._captureMemorySetting.get()) {
             if (!isFrameMode)  // Frame mode skews time, don't render aux overviews.
                 this._overviewControls.push(new WebInspector.TimelineMemoryOverview(this._model, this._uiUtils));
             this._addModeView(new WebInspector.MemoryCountersGraph(this, this._model, this._uiUtils));
         }
 
-        if (this._capturePowerSetting && this._capturePowerSetting.get()) {
+        if (this._capturePowerSetting && this._capturePowerSetting.get() &&
+            WebInspector.targetManager.mainTarget().hasCapability(WebInspector.Target.Capabilities.CanProfilePower)) {
             if (!isFrameMode)  // Frame mode skews time, don't render aux overviews.
                 this._overviewControls.push(new WebInspector.TimelinePowerOverview(this._model));
             this._addModeView(new WebInspector.TimelinePowerGraph(this, this._model));
         }
 
         if (this._lazyTimelineView)
             this._lazyTimelineView.setFrameModel(isFrameMode ? this._frameModel() : null);
 
         this._overviewPane.setOverviewControls(this._overviewControls);
         this.doResize();
@@ skipping 792 matching lines @@
      * @param {!WebInspector.TimelineModel.Record} record
      * @return {boolean}
      */
     accept: function(record)
     {
         return !this._regex || this._uiUtils.testContentMatching(record, this._regex);
     },
 
     __proto__: WebInspector.TimelineModel.Filter.prototype
 }