Port everything to class framework

The last patch in the sequence. Every place that was previously
setting prototype has been ported to Lang.Class, to make code more
concise and allow for better toString().

https://bugzilla.gnome.org/show_bug.cgi?id=664436

js/ui/workspaceThumbnail.js

@@ -25,11 +25,9 @@ const SLIDE_ANIMATION_TIME = 0.2;
 // placeholder exactly.
 const WORKSPACE_CUT_SIZE = 10;
 
-function WindowClone(realWindow) {
-    this._init(realWindow);
-}
+const WindowClone = new Lang.Class({
+    Name: 'WindowClone',
 
-WindowClone.prototype = {
     _init : function(realWindow) {
         this.actor = new Clutter.Clone({ source: realWindow.get_texture(),
                                          reactive: true });
@@ -126,7 +124,7 @@ WindowClone.prototype = {
 
         this.emit('drag-end');
     }
-};
+});
 Signals.addSignalMethods(WindowClone.prototype);
 
 
@@ -144,11 +142,9 @@ const ThumbnailState = {
 /**
  * @metaWorkspace: a #Meta.Workspace
  */
-function WorkspaceThumbnail(metaWorkspace) {
-    this._init(metaWorkspace);
-}
+const WorkspaceThumbnail = new Lang.Class({
+    Name: 'WorkspaceThumbnail',
 
-WorkspaceThumbnail.prototype = {
     _init : function(metaWorkspace) {
         this.metaWorkspace = metaWorkspace;
         this.monitorIndex = Main.layoutManager.primaryIndex;
@@ -469,16 +465,14 @@ WorkspaceThumbnail.prototype = {
 
         return false;
     }
-};
+});
 
 Signals.addSignalMethods(WorkspaceThumbnail.prototype);
 
 
-function ThumbnailsBox() {
-    this._init();
-}
+const ThumbnailsBox = new Lang.Class({
+    Name: 'ThumbnailsBox',
 
-ThumbnailsBox.prototype = {
     _init: function() {
         this.actor = new Shell.GenericContainer({ style_class: 'workspace-thumbnails',
                                                   request_mode: Clutter.RequestMode.WIDTH_FOR_HEIGHT });
@@ -1028,4 +1022,4 @@ ThumbnailsBox.prototype = {
                            onCompleteScope: this
                          });
     }
-};
+});