Fix a couple of crashes related to app-crashed balloon.

chrome/browser/background_contents_service.cc

Index: chrome/browser/background_contents_service.cc
diff --git a/chrome/browser/background_contents_service.cc b/chrome/browser/background_contents_service.cc
index 1c22b5195572e004c465980f2c6ab9ea23c160f3..46a5f07a79a8f940d3b1b1e6ac7e02826f6d623d 100644
--- a/chrome/browser/background_contents_service.cc
+++ b/chrome/browser/background_contents_service.cc
@@ -229,7 +229,7 @@ void BackgroundContentsService::Observe(NotificationType type,
         if (extension && extension->background_url().is_valid())
           break;
       }
-      RegisterBackgroundContents(Details<BackgroundContents>(details).ptr());
+      RegisterBackgroundContents(bgcontents);
       break;
     }
     case NotificationType::EXTENSION_LOADED: {
@@ -387,9 +387,10 @@ void BackgroundContentsService::LoadBackgroundContentsFromDictionary(
   DCHECK(extensions_service);
 
   DictionaryValue* dict;
-  contents->GetDictionaryWithoutPathExpansion(extension_id, &dict);
-  if (dict == NULL)
+  if (!contents->GetDictionaryWithoutPathExpansion(extension_id, &dict) ||
+      dict == NULL)
     return;
+
   string16 frame_name;
   std::string url;
   dict->GetString(kUrlKey, &url);
@@ -518,6 +519,8 @@ void BackgroundContentsService::BackgroundContentsOpened(
   DCHECK(!details->application_id.empty());
   contents_map_[details->application_id].contents = details->contents;
   contents_map_[details->application_id].frame_name = details->frame_name;
+
+  ScheduleCloseBalloon(UTF16ToASCII(details->application_id));
 }
 
 // Used by test code and debug checks to verify whether a given