Add multiple destruction callbacks to AndroidOverlay.

media/mojo/clients/mojo_android_overlay_unittest.cc

Index: media/mojo/clients/mojo_android_overlay_unittest.cc
diff --git a/media/mojo/clients/mojo_android_overlay_unittest.cc b/media/mojo/clients/mojo_android_overlay_unittest.cc
index cf11d7e996b9962c7a998c4bba26403c9ac4f511..c4e2f6e88add99e9409042bdb58d0c1d9d540db8 100644
--- a/media/mojo/clients/mojo_android_overlay_unittest.cc
+++ b/media/mojo/clients/mojo_android_overlay_unittest.cc
@@ -80,8 +80,6 @@ class MojoAndroidOverlayTest : public ::testing::Test {
                                   base::Unretained(&callbacks_));
     config_.failed_cb = base::Bind(&MockClientCallbacks::OnFailed,
                                    base::Unretained(&callbacks_));
-    config_.destroyed_cb = base::Bind(&MockClientCallbacks::OnDestroyed,
-                                      base::Unretained(&callbacks_));
 
     // Make sure that we have an implementation of GpuSurfaceLookup.
     gpu::GpuSurfaceTracker::Get();
@@ -111,6 +109,8 @@ class MojoAndroidOverlayTest : public ::testing::Test {
 
     overlay_client_.reset(new MojoAndroidOverlay(
         std::move(provider_ptr), std::move(config_), routing_token));
+    overlay_client_->AddDestructionCallback(base::Bind(
+        &MockClientCallbacks::OnDestroyed, base::Unretained(&callbacks_)));
     base::RunLoop().RunUntilIdle();
   }