Enable WebIDBCursorImplTest.PrefetchTest and AdvancePrefectTest.

content/child/indexed_db/webidbcursor_impl_unittest.cc

Index: content/child/indexed_db/webidbcursor_impl_unittest.cc
diff --git a/content/child/indexed_db/webidbcursor_impl_unittest.cc b/content/child/indexed_db/webidbcursor_impl_unittest.cc
index b1e1c478bc227e49364a3f54819ded18e03b7ce0..2ff4617c7810ce8ab6c174e30addfb513ba56c29 100644
--- a/content/child/indexed_db/webidbcursor_impl_unittest.cc
+++ b/content/child/indexed_db/webidbcursor_impl_unittest.cc
@@ -138,13 +138,7 @@ class WebIDBCursorImplTest : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(WebIDBCursorImplTest);
 };
 
-// Fails under Linux ASAN: crbug.com/389647
-#if defined(OS_LINUX)
-#define MAYBE_PrefetchTest DISABLED_PrefetchTest
-#else
-#define MAYBE_PrefetchTest PrefetchTest
-#endif
-TEST_F(WebIDBCursorImplTest, MAYBE_PrefetchTest) {
+TEST_F(WebIDBCursorImplTest, PrefetchTest) {
   const int64 transaction_id = 1;
   {
     WebIDBCursorImpl cursor(WebIDBCursorImpl::kInvalidCursorId,
@@ -214,13 +208,7 @@ TEST_F(WebIDBCursorImplTest, MAYBE_PrefetchTest) {
             WebIDBCursorImpl::kInvalidCursorId);
 }
 
-// Fails under Linux ASAN: crbug.com/389647
-#if defined(OS_LINUX)
-#define MAYBE_AdvancePrefetchTest DISABLED_AdvancePrefetchTest
-#else
-#define MAYBE_AdvancePrefetchTest AdvancePrefetchTest
-#endif
-TEST_F(WebIDBCursorImplTest, MAYBE_AdvancePrefetchTest) {
+TEST_F(WebIDBCursorImplTest, AdvancePrefetchTest) {
   const int64 transaction_id = 1;
   WebIDBCursorImpl cursor(WebIDBCursorImpl::kInvalidCursorId,
                           transaction_id,