Add some temporary debug code to assist in fixing frequent orange Bug 562326.

toolkit/content/tests/chrome/bug451286_window.xul

@@ -90,7 +90,11 @@
       }, Ci.nsIThread.DISPATCH_NORMAL);
     }
 
-    function onPageShow() {
+    function onPageShow(aEvent) {
+      ok(true, "[Bug 562326] pageshow event received for " + aEvent.target.URL);
+      ok(true, "[Bug 562326] Event target gBrowser.contentDocument? " +
+                (aEvent.target == gBrowser.contentDocument))
+              
       gBrowser.removeEventListener("pageshow", onPageShow, false);
 
       // First, take a snapshot of the window without highlighting
@@ -105,7 +109,13 @@
         matchCase.doCommand();
 
       // Turn on highlighting
-      gFindBar.toggleHighlight(true);
+      try {
+        gFindBar.toggleHighlight(true);
+      } catch (e) {
+        ok(false, "[Bug 562326] Mark this failure as Bug 526326...")
+        ok(false, "[Bug 562326] First toggleHighlight call failed " +
+           e.toString());
+      }
       gFindBar.close();
     
       // Take snapshot of highlighing
@@ -114,7 +124,13 @@
       // Now, remove the highlighting, and take a snapshot to compare
       // to our original state
       gFindBar.open();
-      gFindBar.toggleHighlight(false);
+      try {
+        gFindBar.toggleHighlight(false);
+      } catch (e) {
+        ok(false, "[Bug 562326] Mark this failure as Bug 526326...")
+        ok(false, "[Bug 562326] Second toggleHighlight call failed " +
+           e.toString());
+      }
       gFindBar.close();
       var unhighlightSnapshot = snapshotWindow(gWin);