Implement a shell of FindRequestManager, and hook it up to WebContentsImpl.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 2500 matching lines @@
 void RenderFrameHostImpl::DidSelectPopupMenuItem(int selected_index) {
   Send(new FrameMsg_SelectPopupMenuItem(routing_id_, selected_index));
 }
 
 void RenderFrameHostImpl::DidCancelPopupMenu() {
   Send(new FrameMsg_SelectPopupMenuItem(routing_id_, -1));
 }
 
 #elif defined(OS_ANDROID)
 
-void RenderFrameHostImpl::ActivateNearestFindResult(int request_id,
-                                                    float x,
-                                                    float y) {
-  Send(
-      new InputMsg_ActivateNearestFindResult(GetRoutingID(), request_id, x, y));
-}
-
-void RenderFrameHostImpl::RequestFindMatchRects(int current_version) {
-  Send(new FrameMsg_FindMatchRects(GetRoutingID(), current_version));
-}
-
 void RenderFrameHostImpl::DidSelectPopupMenuItems(
     const std::vector<int>& selected_indices) {
   Send(new FrameMsg_SelectPopupMenuItems(routing_id_, false, selected_indices));
 }
 
 void RenderFrameHostImpl::DidCancelPopupMenu() {
   Send(new FrameMsg_SelectPopupMenuItems(
       routing_id_, true, std::vector<int>()));
 }
 
@@ skipping 202 matching lines @@
 }
 
 void RenderFrameHostImpl::CreateWebBluetoothService(
     blink::mojom::WebBluetoothServiceRequest request) {
   DCHECK(!web_bluetooth_service_);
   web_bluetooth_service_.reset(
       new WebBluetoothServiceImpl(this, std::move(request)));
 }
 
 }  // namespace content