Enable multidex for ChromePublicTests app

chrome/android/javatests/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- 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 name must be unique. -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.chromium.chrome.tests">
 
     <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
     <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
     <uses-permission android:name="android.permission.READ_LOGS"/>
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+        android:name="android.support.multidex.MultiDexApplication"

[jbudorick, 2017/05/30 19:44:25]

This should likely be BaseChromiumApplication instead.

         android:label="ChromePublicTest">
 
         <uses-library android:name="android.test.runner" />
 
         <provider android:name="org.chromium.chrome.test.TestContentProvider"
             android:authorities="org.chromium.chrome.test.TestContentProvider"
             android:exported="true" />
 
         <provider android:name="org.chromium.chrome.test.partnercustomizations.TestPartnerBrowserCustomizationsProvider"
             android:authorities="org.chromium.chrome.test.partnercustomizations.TestPartnerBrowserCustomizationsProvider"
@@ skipping 27 matching lines @@
     </application>
 
     <instrumentation android:name="org.chromium.base.test.BaseChromiumAndroidJUnitRunner"
         android:targetPackage="{{manifest_package}}"
         android:label="Tests for {{manifest_package}}"
         chromium-junit4="true"/>
     <instrumentation android:name="org.chromium.chrome.test.ChromeInstrumentationTestRunner"
         android:targetPackage="{{manifest_package}}"
         android:label="Tests for {{manifest_package}}"/>
 </manifest>