Allow configuring CPU profiler sampling interval

Source/devtools/front_end/SettingsScreen.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 246 matching lines @@
 
         for (var i = 0; i < options.length; ++i) {
             var option = options[i];
             select.add(new Option(option[0], option[1]));
             if (settingValue === option[1])
                 select.selectedIndex = i;
         }
 
         function changeListener(e)
         {
-            setting.set(e.target.value);
+            // Don't use e.target.value to avoid conversion of the value to string.
+            setting.set(options[select.selectedIndex][1]);
         }
 
         select.addEventListener("change", changeListener, false);
         return p;
     },
 
     /**
      * @param {string} label
      * @param {WebInspector.Setting} setting
      * @param {boolean} numeric
@@ skipping 127 matching lines @@
         fieldset = WebInspector.SettingsTab.createSettingFieldset(WebInspector.settings.skipStackFramesSwitch);
         fieldset.appendChild(this._createInputSetting(WebInspector.UIString("Pattern"), WebInspector.settings.skipStackFramesPattern, false, 1000, "100px", WebInspector.SettingsScreen.regexValidator));
         checkbox.appendChild(fieldset);
         p.appendChild(checkbox);
     }
     WebInspector.settings.skipStackFramesSwitch.addChangeListener(this._skipStackFramesSwitchOrPatternChanged, this);
     WebInspector.settings.skipStackFramesPattern.addChangeListener(this._skipStackFramesSwitchOrPatternChanged, this);
 
     p = this._appendSection(WebInspector.UIString("Profiler"));
     p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Show advanced heap snapshot properties"), WebInspector.settings.showAdvancedHeapSnapshotProperties));
+    p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("High resolution CPU profiling"), WebInspector.settings.highResolutionCpuProfiling));
 
     p = this._appendSection(WebInspector.UIString("Timeline"));
     checkbox = WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Limit number of captured JS stack frames"), WebInspector.settings.timelineLimitStackFramesFlag);
     p.appendChild(checkbox);
 
     fieldset = WebInspector.SettingsTab.createSettingFieldset(WebInspector.settings.timelineLimitStackFramesFlag);
     var frameCountValidator = WebInspector.SettingsScreen.integerValidator.bind(this, 0, 99);
     fieldset.appendChild(this._createInputSetting(WebInspector.UIString("Frames to capture"), WebInspector.settings.timelineStackFramesToCapture, true, 2, "2em", frameCountValidator));
     checkbox.appendChild(fieldset);
 
@@ skipping 799 matching lines @@
         var columns = this.columns();
         for (var i = 0; i < columns.length; ++i) {
             var columnId = columns[i];
             var inputElement = this._addInputElements[columnId];
             inputElement.value = "";
         }
     },
 
     __proto__: WebInspector.SettingsList.prototype
 }