Remove SQLITE_NO_SYNC on Chrome OS

third_party/sqlite/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 declare_args() {
   # Controls whether the build should uses the version of sqlite3 library
   # shipped with the system (currently only supported on iOS) or the one
   # shipped with Chromium source.
   use_system_sqlite = is_ios
 }
@@ skipping 86 matching lines @@
       #   src/src/parse.py
       #   src/tool/mkkeywordhash.c
     ]
     if (is_component_build) {
       if (is_win) {
         defines += [ "SQLITE_API=__declspec(dllexport)" ]
       } else {
         defines += [ "SQLITE_API=__attribute__((visibility(\"default\")))" ]
       }
     }
-    if (is_chromeos) {
-      defines += [
-        # Despite obvious warnings about not using this flag in deployment, we
-        # are turning off sync in ChromeOS and relying on the underlying
-        # journaling filesystem to do error recovery properly. It's much faster.
-        "SQLITE_NO_SYNC",
-      ]
-    }
     if (is_posix) {
       defines += [
         # Allow xSleep() call on Unix to use usleep() rather than sleep(), so it
         # will have microsecond precision.  Should only affect contended
         # databases via the busy callback.  Browser profile databases are mostly
         # exclusive, but renderer databases may allow for contention.
         "HAVE_USLEEP=1",
 
         # Use pread/pwrite directly rather than emulating them.
         "USE_PREAD=1",
@@ skipping 132 matching lines @@
         "//third_party/icu",
       ]
       if (is_clang) {
         # src/ext/icu/icu.c uses assert(!"string") which causes warnings about
         # conversion from string literal to bool.
         configs -= [ "//build/config/clang:extra_warnings" ]
       }
     }
   }
 }