Bug 998118 - Dont display crashed background tabs. r=benfrancis, a=lm…

…andel

apps/browser/js/browser.js

@@ -593,10 +593,6 @@ var Browser = {
     AuthenticationDialog.clear(tab.id);
     this.frames.removeChild(tab.dom);
     delete tab.dom;
-    delete tab.screenshot;
-    if (this.currentScreen === this.TABS_SCREEN) {
-      this.showTabScreen();
-    }
   },
 
   handleVisibilityChange: function browser_handleVisibilityChange() {
@@ -1503,9 +1499,7 @@ var Browser = {
     a.appendChild(span);
     li.appendChild(a);
 
-    if (tab.crashed) {
-      preview.classList.add('crashed');
-    } else if (tab.screenshot) {
+    if (tab.screenshot) {
       var objectURL = URL.createObjectURL(tab.screenshot);
       this._tabScreenObjectURLs.push(objectURL);
       preview.style.backgroundImage = 'url(' + objectURL + ')';

apps/browser/style/browser.css

@@ -144,10 +144,6 @@ input[type="image"] {
   margin-right: 1rem;
 }
 
-.preview.crashed {
-  background-image: url(images/tab-icon-crashedtab.png);
-}
-
 #tabs-list span {
   pointer-events: none;
   display: block;