Fix possible deadlock during shutdown by not using the FILE thread.

content/browser/dom_storage/dom_storage_browsertest.cc

Index: content/browser/dom_storage/dom_storage_browsertest.cc
diff --git a/content/browser/dom_storage/dom_storage_browsertest.cc b/content/browser/dom_storage/dom_storage_browsertest.cc
index 3a109c96ba8d2cb8eb5175f6c80b3679db3d8924..8c4b74502697de74a685be09ca0bf7cf4e820199 100644
--- a/content/browser/dom_storage/dom_storage_browsertest.cc
+++ b/content/browser/dom_storage/dom_storage_browsertest.cc
@@ -98,13 +98,7 @@ IN_PROC_BROWSER_TEST_F(DOMStorageBrowserTest, MAYBE_DataPersists) {
   SimpleTest(GetTestUrl("dom_storage", "verify_data.html"), kNotIncognito);
 }
 
-// http://crbug.com/712872 All the mojo tests are flaky on Mac.
-#if defined(OS_MACOSX)
-#define MAYBE_SanityCheck DISABLED_SanityCheck
-#else
-#define MAYBE_SanityCheck SanityCheck
-#endif
-IN_PROC_BROWSER_TEST_F(MojoDOMStorageBrowserTest, MAYBE_SanityCheck) {
+IN_PROC_BROWSER_TEST_F(MojoDOMStorageBrowserTest, SanityCheck) {
   SimpleTest(GetTestUrl("dom_storage", "sanity_check.html"), kNotIncognito);
 }
 
@@ -118,11 +112,6 @@ IN_PROC_BROWSER_TEST_F(MojoDOMStorageBrowserTest, PRE_DataPersists) {
   Flush();
 }
 
-// http://crbug.com/712872 All the mojo tests are flaky on Mac.
-#if defined(OS_MACOSX)
-#undef MAYBE_DataPersists
-#define MAYBE_DataPersists DISABLED_DataPersists
-#endif
 IN_PROC_BROWSER_TEST_F(MojoDOMStorageBrowserTest, MAYBE_DataPersists) {
   SimpleTest(GetTestUrl("dom_storage", "verify_data.html"), kNotIncognito);
 }
@@ -146,9 +135,6 @@ IN_PROC_BROWSER_TEST_F(DOMStorageMigrationBrowserTest, PRE_DataMigrates) {
 // http://crbug.com/654704 PRE_ tests aren't supported on Android.
 #if defined(OS_ANDROID)
 #define MAYBE_DataMigrates DISABLED_DataMigrates
-#elif defined(OS_MACOSX)
-// http://crbug.com/712872 All the mojo tests are flaky on Mac.
-#define MAYBE_DataMigrates DISABLED_DataMigrates
 #else
 #define MAYBE_DataMigrates DataMigrates
 #endif