third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java

Index: third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java
diff --git a/third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java b/third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java
index 0f42ac506075b394e2024f754b6208cafdbee361..d2bee2a4001fb655de112967cffcb778c500077d 100644
--- a/third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java
+++ b/third_party/protobuf/java/core/src/test/java/com/google/protobuf/LazyStringArrayListTest.java
@@ -32,12 +32,12 @@ package com.google.protobuf;
 
 import static java.util.Arrays.asList;
 
-import junit.framework.TestCase;
-
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.ConcurrentModificationException;
 import java.util.Iterator;
 import java.util.List;
+import junit.framework.TestCase;
 
 /**
  * Tests for {@link LazyStringArrayList}.
@@ -233,7 +233,7 @@ public class LazyStringArrayListTest extends TestCase {
     }
     
     try {
-      list.addAllByteArray(asList(BYTE_STRING_A.toByteArray()));
+      list.addAllByteArray(Collections.singletonList(BYTE_STRING_A.toByteArray()));
       fail();
     } catch (UnsupportedOperationException e) {
       // expected