Fix a race condition when an IconAnimation is still running at browser shutdown.

chrome/test/data/extensions/api_test/script_badge/basics/background.js

Index: chrome/test/data/extensions/api_test/script_badge/basics/background.js
diff --git a/chrome/test/data/extensions/api_test/script_badge/basics/background.js b/chrome/test/data/extensions/api_test/script_badge/basics/background.js
index 46497dd57644d2d939957fa436784e4c136f433d..53e79e19025ac3f15b6b8115de0197f9efa4e632 100644
--- a/chrome/test/data/extensions/api_test/script_badge/basics/background.js
+++ b/chrome/test/data/extensions/api_test/script_badge/basics/background.js
@@ -7,4 +7,22 @@ chrome.scriptBadge.onClicked.addListener(function(windowId) {
   chrome.test.notifyPass();
 });
 
+chrome.webNavigation.onCompleted.addListener(function(details) {
+    if (details.url.indexOf("http://") === 0) {
+      // Executing script causes an icon animation to run. Originally, if
+      // this animation was still running when the browser shut down, it
+      // would cause a crash due to the Extension being destroyed on the
+      // IO thread, and transitively causing a UI-only object to be
+      // destroyed there.
+      chrome.tabs.executeScript(
+          details.tabId,
+          {
+            // The setTimeout allows the ScriptBadgeController to
+            // reliably notice that a content script has run.
+            "code": ("window.setTimeout(function() {" +
+                     "  chrome.test.notifyPass();}, 1)")
+          });
+    }
+  });
+
 chrome.test.notifyPass();