DialogSurfaceManager implementation.

content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java

Index: content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
index aed55c3f5328b61e80ea44f357b26f3418a24258..747ee781707e029f70c99db042c466e80782db61 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
@@ -9,6 +9,7 @@ import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
 import android.text.TextUtils;
@@ -27,6 +28,7 @@ import org.chromium.base.library_loader.Linker;
 import org.chromium.content.app.ChromiumLinkerParams;
 import org.chromium.content.app.PrivilegedProcessService;
 import org.chromium.content.app.SandboxedProcessService;
+import org.chromium.content.browser.androidoverlay.AndroidOverlayProviderImpl;
 import org.chromium.content.common.ContentSwitches;
 import org.chromium.content.common.FileDescriptorInfo;
 import org.chromium.content.common.IChildProcessCallback;
@@ -823,6 +825,15 @@ public class ChildProcessLauncher {
                 }
                 return new SurfaceWrapper(surface);
             }
+
+            @Override
+            public IBinder getAndroidOverlayProvider() {
+                if (callbackType != CALLBACK_FOR_GPU_PROCESS) {
+                    Log.e(TAG, "Illegal callback for non-GPU process.");
+                    return null;
+                }
+                return AndroidOverlayProviderImpl.getInstance();
+            }
         };
     }