DO NOT SUBMIT: add main dex list check to classloader.

chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
index bd72d1ea29595e530b99125172a9146b2cced1fc..87c0e4db24f67fad20f1fd0a62030f075111b267 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
@@ -11,6 +11,7 @@ import android.os.SystemClock;
 
 import org.chromium.base.ActivityState;
 import org.chromium.base.ApplicationStatus;
+import org.chromium.base.BuildConfig;
 import org.chromium.base.CommandLineInitUtil;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.ThreadUtils;
@@ -18,6 +19,7 @@ import org.chromium.base.TraceEvent;
 import org.chromium.base.annotations.MainDex;
 import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.library_loader.ProcessInitException;
+import org.chromium.base.multidex.ChromiumClassLoader;
 import org.chromium.chrome.browser.document.DocumentActivity;
 import org.chromium.chrome.browser.document.IncognitoDocumentActivity;
 import org.chromium.chrome.browser.init.InvalidStartupDialog;
@@ -55,6 +57,10 @@ public class ChromeApplication extends ContentApplication {
      */
     @Override
     public void onCreate() {
+        Context appContext = ContextUtils.getApplicationContext();
+        if (!BuildConfig.isOfficialBuild()) {
+            ChromiumClassLoader.initDebugClassLoader();
+        }
         UmaUtils.recordMainEntryPointTime();
         initCommandLine();
         TraceEvent.maybeEnableEarlyTracing();