Added UnguessableToken.java .

base/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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 167 matching lines @@
     "android/java_runtime.cc",
     "android/java_runtime.h",
     "android/jni_android.cc",
     "android/jni_android.h",
     "android/jni_array.cc",
     "android/jni_array.h",
     "android/jni_registrar.cc",
     "android/jni_registrar.h",
     "android/jni_string.cc",
     "android/jni_string.h",
+    "android/jni_unguessable_token.cc",
+    "android/jni_unguessable_token.h",
     "android/jni_utils.cc",
     "android/jni_utils.h",
     "android/jni_weak_ref.cc",
     "android/jni_weak_ref.h",
     "android/library_loader/library_load_from_apk_status_codes.h",
     "android/library_loader/library_loader_hooks.cc",
     "android/library_loader/library_loader_hooks.h",
     "android/library_loader/library_prefetcher.cc",
     "android/library_loader/library_prefetcher.h",
     "android/locale_utils.cc",
@@ skipping 1541 matching lines @@
 }
 
 test("base_unittests") {
   sources = [
     "allocator/tcmalloc_unittest.cc",
     "android/application_status_listener_unittest.cc",
     "android/content_uri_utils_unittest.cc",
     "android/jni_android_unittest.cc",
     "android/jni_array_unittest.cc",
     "android/jni_string_unittest.cc",
+    "android/jni_unguessable_token_unittest.cc",
     "android/library_loader/library_prefetcher_unittest.cc",
     "android/path_utils_unittest.cc",
     "android/scoped_java_ref_unittest.cc",
     "android/sys_utils_unittest.cc",
     "at_exit_unittest.cc",
     "atomicops_unittest.cc",
     "barrier_closure_unittest.cc",
     "base64_unittest.cc",
     "base64url_unittest.cc",
     "big_endian_unittest.cc",
@@ skipping 466 matching lines @@
       "android/java/src/org/chromium/base/JavaHandlerThread.java",
       "android/java/src/org/chromium/base/LocaleUtils.java",
       "android/java/src/org/chromium/base/MemoryPressureListener.java",
       "android/java/src/org/chromium/base/PathService.java",
       "android/java/src/org/chromium/base/PathUtils.java",
       "android/java/src/org/chromium/base/PowerMonitor.java",
       "android/java/src/org/chromium/base/SysUtils.java",
       "android/java/src/org/chromium/base/SystemMessageHandler.java",
       "android/java/src/org/chromium/base/ThreadUtils.java",
       "android/java/src/org/chromium/base/TraceEvent.java",
+      "android/java/src/org/chromium/base/UnguessableToken.java",
       "android/java/src/org/chromium/base/library_loader/LibraryLoader.java",
       "android/java/src/org/chromium/base/metrics/RecordHistogram.java",
       "android/java/src/org/chromium/base/metrics/RecordUserAction.java",
       "android/java/src/org/chromium/base/metrics/StatisticsRecorderAndroid.java",
     ]
 
     public_deps = [
       ":android_runtime_jni_headers",
     ]
 
@@ skipping 53 matching lines @@
       "android/java/src/org/chromium/base/PowerMonitor.java",
       "android/java/src/org/chromium/base/PowerStatusReceiver.java",
       "android/java/src/org/chromium/base/Promise.java",
       "android/java/src/org/chromium/base/ResourceExtractor.java",
       "android/java/src/org/chromium/base/SecureRandomInitializer.java",
       "android/java/src/org/chromium/base/StreamUtil.java",
       "android/java/src/org/chromium/base/SysUtils.java",
       "android/java/src/org/chromium/base/SystemMessageHandler.java",
       "android/java/src/org/chromium/base/ThreadUtils.java",
       "android/java/src/org/chromium/base/TraceEvent.java",
+      "android/java/src/org/chromium/base/UnguessableToken.java",
       "android/java/src/org/chromium/base/VisibleForTesting.java",
       "android/java/src/org/chromium/base/annotations/AccessedByNative.java",
       "android/java/src/org/chromium/base/annotations/CalledByNative.java",
       "android/java/src/org/chromium/base/annotations/CalledByNativeUnchecked.java",
       "android/java/src/org/chromium/base/annotations/JNIAdditionalImport.java",
       "android/java/src/org/chromium/base/annotations/JNINamespace.java",
       "android/java/src/org/chromium/base/annotations/MainDex.java",
       "android/java/src/org/chromium/base/annotations/NativeCall.java",
       "android/java/src/org/chromium/base/annotations/NativeClassQualifiedName.java",
       "android/java/src/org/chromium/base/annotations/RemovableInRelease.java",
@@ skipping 149 matching lines @@
 }
 
 fuzzer_test("base_json_correctness_fuzzer") {
   sources = [
     "json/correctness_fuzzer.cc",
   ]
   deps = [
     ":base",
   ]
 }