[sql] Disable mmap test under mojo.

sql/connection_unittest.cc

Index: sql/connection_unittest.cc
diff --git a/sql/connection_unittest.cc b/sql/connection_unittest.cc
index 5412be150fcb75276e7f437ca489c5b3ee599ef9..0038a1d7f57aac2f8b2f692c6ed17eae44a5ee8c 100644
--- a/sql/connection_unittest.cc
+++ b/sql/connection_unittest.cc
@@ -1306,6 +1306,7 @@ TEST_F(SQLConnectionTest, TimeUpdateTransaction) {
 // patched to mmap read only, then write using OS file writes.  If the
 // memory-mapped version doesn't reflect the OS file writes, SQLite's
 // memory-mapped I/O should be disabled on this platform.
+#if !defined(MOJO_APPTEST_IMPL)
 TEST_F(SQLConnectionTest, MmapTest) {
   // Skip the test for platforms which don't enable memory-mapped I/O in SQLite,
   // or which don't even support the pragma.  The former seems to apply to iOS,
@@ -1375,5 +1376,6 @@ TEST_F(SQLConnectionTest, MmapTest) {
     ASSERT_EQ('4', m.data()[kOffset]);
   }
 }
+#endif
 
 }  // namespace