[Android] Enable multidex for debug builds of ChromePublic.

base/android/java/src/org/chromium/base/BaseChromiumApplication.java

Index: base/android/java/src/org/chromium/base/BaseChromiumApplication.java
diff --git a/base/android/java/src/org/chromium/base/BaseChromiumApplication.java b/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
index 1c1f826bfa0aed46e5879a11709e89603bc9579a..e4e6e201e05597cd449e6c985e3f9fc4a341c39d 100644
--- a/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
+++ b/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
@@ -10,6 +10,8 @@ import android.content.Context;
 import android.os.Bundle;
 import android.view.Window;
 
+import org.chromium.base.multidex.ChromiumMultiDex;
+
 /**
  * Basic application functionality that should be shared among all browser applications.
  */
@@ -26,6 +28,12 @@ public class BaseChromiumApplication extends Application {
         mShouldInitializeApplicationStatusTracking = shouldInitializeApplicationStatusTracking;
     }
 
+    @Override
+    protected void attachBaseContext(Context base) {
+        super.attachBaseContext(base);
+        ChromiumMultiDex.install(this);
+    }
+
     /**
      * Interface to be implemented by listeners for window focus events.
      */