Reland of Add increment install native libraries first in lookup paths

build/android/incremental_install/java/org/chromium/incrementalinstall/Reflect.java

 // Copyright 2015 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.
 
 package org.chromium.incrementalinstall;
 
 import java.lang.reflect.Array;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
@@ skipping 28 matching lines @@
     static Object getField(Object instance, String name) throws ReflectiveOperationException {
         Field field = findField(instance, name);
         field.setAccessible(true);
         return field.get(instance);
     }
 
     /**
      * Concatenates two arrays into a new array. The arrays must be of the same
      * type.
      */
-    static Object[] concatArrays(Object[] left, Object[] right) {
+    static Object[] concatArrays(Object[] arrType, Object[] left, Object[] right) {
         Object[] result = (Object[]) Array.newInstance(
-                left.getClass().getComponentType(), left.length + right.length);
+                arrType.getClass().getComponentType(), left.length + right.length);
         System.arraycopy(left, 0, result, 0, left.length);
         System.arraycopy(right, 0, result, left.length, right.length);
         return result;
     }
 
     /**
      * Invokes a method with zero or more parameters. For static methods, use the Class as the
      * instance.
      */
     static Object invokeMethod(Object instance, String name, Object... params)
@@ skipping 71 matching lines @@
         }
         Class<?> rightClazz = right.getClass();
         if (left.isPrimitive()) {
             // TODO(agrieve): Fill in the rest as needed.
             return left == boolean.class && rightClazz == Boolean.class
                    || left == int.class && rightClazz == Integer.class;
         }
         return left.isAssignableFrom(rightClazz);
     }
 }