[Android] Enable multidex for release builds of chrome_public_test_apk.

base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java

Index: base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java
diff --git a/base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java b/base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java
index 3d036c2099be26d1f761f4e2ff9a7ade621a32c6..9049cb0565e4ff4323d65da53c9d3df1dc4f93d3 100644
--- a/base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java
+++ b/base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java
@@ -12,7 +12,6 @@ import android.content.pm.PackageManager;
 import android.os.Build;
 import android.support.multidex.MultiDex;
 
-import org.chromium.base.BuildConfig;
 import org.chromium.base.Log;
 import org.chromium.base.VisibleForTesting;
 
@@ -48,8 +47,6 @@ public class ChromiumMultiDexInstaller {
      */
     @VisibleForTesting
     public static void install(Context context) {
-        if (!BuildConfig.isMultidexEnabled()) return;
-
         // TODO(jbudorick): Back out this version check once support for K & below works.
         // http://crbug.com/512357
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP