Flush SimpleCache worker pool between all tests.

content/browser/service_worker/service_worker_cache_unittest.cc

Index: content/browser/service_worker/service_worker_cache_unittest.cc
diff --git a/content/browser/service_worker/service_worker_cache_unittest.cc b/content/browser/service_worker/service_worker_cache_unittest.cc
index b4dcc3a1f2cb23d421ac09e7d0c8310880dd0edb..0f3c5ea42b8a7876d3ca216327a12a7f175c940e 100644
--- a/content/browser/service_worker/service_worker_cache_unittest.cc
+++ b/content/browser/service_worker/service_worker_cache_unittest.cc
@@ -14,7 +14,6 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
-#include "net/disk_cache/simple/simple_backend_impl.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_job_factory_impl.h"
@@ -80,12 +79,6 @@ class ServiceWorkerCacheTest : public testing::Test {
 
   virtual void TearDown() OVERRIDE {
     base::RunLoop().RunUntilIdle();
-    disk_cache::SimpleBackendImpl::FlushWorkerPoolForTesting();
-    base::RunLoop().RunUntilIdle();
-    cache_ = NULL;
-    base::RunLoop().RunUntilIdle();
-    disk_cache::SimpleBackendImpl::FlushWorkerPoolForTesting();
-    base::RunLoop().RunUntilIdle();
   }
 
   void CreateRequests(ChromeBlobStorageContext* blob_storage_context) {