Fix incremental build for Android O

build/android/incremental_install/java/org/chromium/incrementalinstall/ClassLoaderPatcher.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 android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.Build;
 import android.util.Log;
@@ skipping 203 matching lines @@
         mAppFilesSubDir.setExecutable(true, false);
     }
 
     private void createSymlink(String to, File from) throws ReflectiveOperationException {
         Reflect.invokeMethod(mLibcoreOs, "symlink", to, from.getAbsolutePath());
     }
 
     private static Object[] makeNativePathElements(File[] paths)
             throws ReflectiveOperationException {
         Object[] entries = new Object[paths.length];
-        if (Build.VERSION.CODENAME.startsWith("O")) {
+        if (Build.VERSION.SDK_INT >= 26) {
             Class<?> entryClazz = Class.forName("dalvik.system.DexPathList$NativeLibraryElement");
             for (int i = 0; i < paths.length; ++i) {
                 entries[i] = Reflect.newInstance(entryClazz, paths[i]);
             }
         } else {
             Class<?> entryClazz = Class.forName("dalvik.system.DexPathList$Element");
             for (int i = 0; i < paths.length; ++i) {
                 entries[i] = Reflect.newInstance(entryClazz, paths[i], true, null, null);
             }
         }
@@ skipping 11 matching lines @@
             File file = files[i];
             Object dexFile;
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                 // loadDexFile requires that ret contain all previously added elements.
                 dexFile = Reflect.invokeMethod(clazz, "loadDexFile", file, optimizedDirectory,
                                                mClassLoader, ret);
             } else {
                 dexFile = Reflect.invokeMethod(clazz, "loadDexFile", file, optimizedDirectory);
             }
             Object dexElement;
-            if (Build.VERSION.CODENAME.startsWith("O")) {
+            if (Build.VERSION.SDK_INT >= 26) {
                 dexElement = Reflect.newInstance(entryClazz, dexFile, file);
             } else {
                 dexElement = Reflect.newInstance(entryClazz, emptyDir, false, file, dexFile);
             }
             ret[curDexElements.length + i] = dexElement;
         }
         return ret;
     }
 }