[turbolizer] Add support for showing perf profiling information.

tools/turbolizer/turbo-visualizer.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 document.onload = (function(d3){
   "use strict";
   var jsonObj;
   var sourceExpandClassList = document.getElementById(SOURCE_EXPAND_ID).classList;
   var sourceCollapseClassList = document.getElementById(SOURCE_COLLAPSE_ID).classList;
   var sourceExpanded = sourceCollapseClassList.contains(COLLAPSE_PANE_BUTTON_VISIBLE);
@@ skipping 166 matching lines @@
             selectMenu.innerHTML = '';
             for (var i = 0; i < jsonObj.phases.length; ++i) {
               var optionElement = document.createElement("option");
               optionElement.text = jsonObj.phases[i].name;
               if (optionElement.text == 'disassembly') {
                 disassemblyPhase = jsonObj.phases[i];
               } else {
                 selectMenu.add(optionElement, null);
               }
             }
+
+            var eventMenu = document.getElementById('event-selector');
+            eventMenu.innerHTML = '';
+            for (var event in jsonObj.eventCounts) {
+              var optionElement = document.createElement("option");
+              optionElement.text = event;
+              eventMenu.add(optionElement, null);
+            }
+            disassemblyView.initializePerfProfile(jsonObj.eventCounts);
             disassemblyView.setNodePositionMap(jsonObj.nodePositions);
             disassemblyView.show(disassemblyPhase.data, null);
 
             var initialPhaseIndex = +window.sessionStorage.getItem("lastSelectedPhase");
             if (!(initialPhaseIndex in jsonObj.phases)) {
               initialPhaseIndex = 0;
             }
 
             // We wish to show the remembered phase {lastSelectedPhase}, but
             // this will crash if the first view we switch to is a
             // ScheduleView. So we first switch to the first phase, which
             // should never be a ScheduleView.
             displayPhase(jsonObj.phases[0]);
             displayPhase(jsonObj.phases[initialPhaseIndex]);
             selectMenu.selectedIndex = initialPhaseIndex;
 
             selectMenu.onchange = function(item) {
               window.sessionStorage.setItem("lastSelectedPhase", selectMenu.selectedIndex);
               displayPhase(jsonObj.phases[selectMenu.selectedIndex]);
             }
 
+            eventMenu.onchange = function(item) {
+              disassemblyView.show(disassemblyView.data, null);
+            }
+
             fitPanesToParents();
 
             d3.select("#search-input").attr("value", window.sessionStorage.getItem("lastSearch") || "");
 
           }
           catch(err) {
             window.console.log("caught exception, clearing session storage just in case");
             window.sessionStorage.clear(); // just in case
             window.console.log("showing error");
             window.alert("Invalid TurboFan JSON file\n" +
@@ skipping 15 matching lines @@
   empty = new EmptyView(EMPTY_PANE_ID, selectionBroker);
 
   initializeHandlers(graph);
 
   setSourceExpanded(getLastExpandedState("source", true));
   setDisassemblyExpanded(getLastExpandedState("disassembly", false));
 
   displayPhaseView(empty, null);
   fitPanesToParents();
 })(window.d3);