TaskScheduler: migrate appcache database over to use it.

content/browser/appcache/appcache_group_unittest.cc

Index: content/browser/appcache/appcache_group_unittest.cc
diff --git a/content/browser/appcache/appcache_group_unittest.cc b/content/browser/appcache/appcache_group_unittest.cc
index 180e522c9a4a94ee810a5285d3b32a2af339fee4..fbc489ddefdaba603e184114a4429b064fe4022a 100644
--- a/content/browser/appcache/appcache_group_unittest.cc
+++ b/content/browser/appcache/appcache_group_unittest.cc
@@ -6,7 +6,7 @@
 
 #include <string>
 
-#include "base/message_loop/message_loop.h"
+#include "base/test/scoped_task_environment.h"
 #include "content/browser/appcache/appcache.h"
 #include "content/browser/appcache/appcache_group.h"
 #include "content/browser/appcache/appcache_host.h"
@@ -95,7 +95,7 @@ class TestAppCacheHost : public AppCacheHost {
 
 class AppCacheGroupTest : public testing::Test {
  private:
-  base::MessageLoop message_loop_;
+  base::test::ScopedTaskEnvironment scoped_task_environment_;
 };
 
 TEST_F(AppCacheGroupTest, AddRemoveCache) {