| Index: mojo/android/system/src/org/chromium/mojo/system/impl/CoreImpl.java | 
| diff --git a/mojo/android/system/src/org/chromium/mojo/system/impl/CoreImpl.java b/mojo/android/system/src/org/chromium/mojo/system/impl/CoreImpl.java | 
| index 52599da9a8cc5c0125cbe5403d1816b338bd9a03..a20ea0a623f33d99ac70c3157f2437bcb1cc9ddd 100644 | 
| --- a/mojo/android/system/src/org/chromium/mojo/system/impl/CoreImpl.java | 
| +++ b/mojo/android/system/src/org/chromium/mojo/system/impl/CoreImpl.java | 
| @@ -6,6 +6,7 @@ package org.chromium.mojo.system.impl; | 
|  | 
| import org.chromium.base.annotations.CalledByNative; | 
| import org.chromium.base.annotations.JNINamespace; | 
| +import org.chromium.base.annotations.MainDex; | 
| import org.chromium.mojo.system.AsyncWaiter; | 
| import org.chromium.mojo.system.Core; | 
| import org.chromium.mojo.system.DataPipe; | 
| @@ -33,6 +34,7 @@ import java.util.List; | 
| * Implementation of {@link Core}. | 
| */ | 
| @JNINamespace("mojo::android") | 
| +@MainDex | 
| public class CoreImpl implements Core, AsyncWaiter { | 
| /** | 
| * Discard flag for the |MojoReadData| operation. | 
|  |