Update from https://crrev.com/304715

base/process/process_unittest.cc

Index: base/process/process_unittest.cc
diff --git a/base/process/process_unittest.cc b/base/process/process_unittest.cc
index 66d6e6346614e5c36288b5e4abfcb21b5726688a..a5ba83473311967d927f0e0c99094faa25f7a9c5 100644
--- a/base/process/process_unittest.cc
+++ b/base/process/process_unittest.cc
@@ -92,6 +92,21 @@ TEST_F(ProcessTest, DuplicateCurrent) {
   ASSERT_TRUE(process2.IsValid());
 }
 
+TEST_F(ProcessTest, DeprecatedGetProcessFromHandle) {
+  Process process1(SpawnChild("SimpleChildProcess"));
+  ASSERT_TRUE(process1.IsValid());
+
+  Process process2 = Process::DeprecatedGetProcessFromHandle(process1.Handle());
+  ASSERT_TRUE(process1.IsValid());
+  ASSERT_TRUE(process2.IsValid());
+  EXPECT_EQ(process1.pid(), process2.pid());
+  EXPECT_FALSE(process1.is_current());
+  EXPECT_FALSE(process2.is_current());
+
+  process1.Close();
+  ASSERT_TRUE(process2.IsValid());
+}
+
 MULTIPROCESS_TEST_MAIN(SleepyChildProcess) {
   PlatformThread::Sleep(TestTimeouts::action_max_timeout());
   return 0;