DevTools: Extract CPU profile model out of CPUProfileView.

LayoutTests/inspector/profiler/profiler-test.js

 var initialize_ProfilerTest = function() {
 
 InspectorTest.startProfilerTest = function(callback)
 {
     WebInspector.inspectorView.showPanel("profiles");
 
     InspectorTest.addResult("Profiler was enabled.");
     InspectorTest.addSniffer(WebInspector.panels.profiles, "_addProfileHeader", InspectorTest._profileHeaderAdded, true);
     InspectorTest.addSniffer(WebInspector.CPUProfileView.prototype, "refresh", InspectorTest._profileViewRefresh, true);
     InspectorTest.safeWrap(callback)();
@@ skipping 35 matching lines @@
 {
     if (InspectorTest._showProfileWhenAdded === profile.title)
         WebInspector.panels.profiles.showProfile(profile);
 };
 
 InspectorTest.waitUntilProfileViewIsShown = function(title, callback)
 {
     callback = InspectorTest.safeWrap(callback);
 
     var profilesPanel = WebInspector.panels.profiles;
-    if (profilesPanel.visibleView && profilesPanel.visibleView.profile && profilesPanel.visibleView.profile.title === title)
+    if (profilesPanel.visibleView && profilesPanel.visibleView.profile && profilesPanel.visibleView._profileHeader.title === title)
         callback(profilesPanel.visibleView);
     else
         InspectorTest._waitUntilProfileViewIsShownCallback = { title: title, callback: callback };
 }
 
 InspectorTest._profileViewRefresh = function()
 {
     // Called in the context of ProfileView.
-    if (InspectorTest._waitUntilProfileViewIsShownCallback && InspectorTest._waitUntilProfileViewIsShownCallback.title === this.profile.title) {
+    if (InspectorTest._waitUntilProfileViewIsShownCallback && InspectorTest._waitUntilProfileViewIsShownCallback.title === this._profileHeader.title) {
         var callback = InspectorTest._waitUntilProfileViewIsShownCallback;
         delete InspectorTest._waitUntilProfileViewIsShownCallback;
         callback.callback(this);
     }
 };
 
 };