Deprecate ContentSubresourceFilterDriver.

components/subresource_filter/content/browser/content_subresource_filter_driver.cc

Index: components/subresource_filter/content/browser/content_subresource_filter_driver.cc
diff --git a/components/subresource_filter/content/browser/content_subresource_filter_driver.cc b/components/subresource_filter/content/browser/content_subresource_filter_driver.cc
deleted file mode 100644
index 59714f1df4ea873ab26d5fb79625029c68e7a0d1..0000000000000000000000000000000000000000
--- a/components/subresource_filter/content/browser/content_subresource_filter_driver.cc
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/subresource_filter/content/browser/content_subresource_filter_driver.h"
-
-#include "components/subresource_filter/content/common/subresource_filter_messages.h"
-#include "content/public/browser/render_frame_host.h"
-
-namespace subresource_filter {
-
-ContentSubresourceFilterDriver::ContentSubresourceFilterDriver(
-    content::RenderFrameHost* render_frame_host)
-    : render_frame_host_(render_frame_host) {}
-
-ContentSubresourceFilterDriver::~ContentSubresourceFilterDriver() {}
-
-void ContentSubresourceFilterDriver::ActivateForNextCommittedLoad(
-    ActivationLevel activation_level,
-    bool measure_performance) {
-  // Must use legacy IPC to ensure the activation message arrives in-order, i.e.
-  // before the load is committed on the renderer side.
-  render_frame_host_->Send(
-      new SubresourceFilterMsg_ActivateForNextCommittedLoad(
-          render_frame_host_->GetRoutingID(), activation_level,
-          measure_performance));
-}
-
-}  // namespace subresource_filter