Bug 1319301 - Part 1. fadeout grey spacer when play event is not triggered by controls. r=jaws

MozReview-Commit-ID: AouOiY9EGo8

--HG--
extra : rebase_source : f9bc781a3d87bee64d8b5b87e403b1d0c6a299dc

toolkit/content/widgets/videocontrols.xml

@@ -557,8 +557,10 @@
                             this.setupStatusFader();
                             if (!this._triggeredByControls && this.dynamicControls && this.videocontrols.isTouchControls)
                                 this.startFadeOut(this.controlBar);
-                            if (!this._triggeredByControls)
+                            if (!this._triggeredByControls) {
                                 this.clickToPlay.hidden = true;
+                                this.controlsSpacer.setAttribute("fadeout", "true");
+                            }
                             this._triggeredByControls = false;
                             break;
                         case "pause":