Keep browser process alive while there are platform apps with background pages running.

chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc

Index: chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc
diff --git a/chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc b/chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc
index b5bc79cefabf93edb2073e85a2bdf45ad59ba723..35ee945d23aa5aff458355d894ff4398414920a2 100644
--- a/chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc
+++ b/chrome/browser/extensions/api/sync_file_system/sync_file_system_apitest.cc
@@ -58,20 +58,18 @@ class SyncFileSystemApiTest : public ExtensionApiTest {
 }  // namespace
 
 // TODO(calvinlo): Add Chrome OS support for syncable file system
-#if !defined(OS_CHROMEOS)
-
-// TODO(calvinlo): Add Chrome OS support for syncable file system
 // (http://crbug.com/160693)
 #if !defined(OS_CHROMEOS)
 
-// TODO(benwells): Re-enable this test.
+// TODO(calvinlo): Re-enable this test.
+// (http://crbug.com/162811)
 IN_PROC_BROWSER_TEST_F(SyncFileSystemApiTest, DISABLED_DeleteFileSystem) {
   ASSERT_TRUE(RunPlatformAppTest("sync_file_system/delete_file_system"))
       << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(SyncFileSystemApiTest, GetUsageAndQuota) {
-  ASSERT_TRUE(RunExtensionTest("sync_file_system/get_usage_and_quota"))
+  ASSERT_TRUE(RunPlatformAppTest("sync_file_system/get_usage_and_quota"))
       << message_;
 }
 
@@ -89,7 +87,5 @@ IN_PROC_BROWSER_TEST_F(SyncFileSystemApiTest, WriteFileThenGetUsage) {
 
 #endif  // !defined(OS_CHROMEOS)
 
-#endif  // !defined(OS_CHROMEOS)
-
 }  // namespace chrome