Revert of Enable find-in-page across GuestViews.

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.cc

 // Copyright 2014 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 "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 
 #include <utility>
 
 #include "base/strings/stringprintf.h"
 #include "components/guest_view/common/guest_view_constants.h"
@@ skipping 177 matching lines @@
       ui::PAGE_TRANSITION_AUTO_TOPLEVEL, std::string());
   web_contents()->GetMainFrame()->GetInterfaceRegistry()->AddInterface(
       base::Bind(&MimeHandlerServiceImpl::Create, stream_->GetWeakPtr()));
 }
 
 void MimeHandlerViewGuest::DidInitialize(
     const base::DictionaryValue& create_params) {
   ExtensionsAPIClient::Get()->AttachWebContentsHelpers(web_contents());
 }
 
+bool MimeHandlerViewGuest::ShouldHandleFindRequestsForEmbedder() const {
+  return is_full_page_plugin();
+}
+
 bool MimeHandlerViewGuest::ZoomPropagatesFromEmbedderToGuest() const {
   return false;
 }
 
 WebContents* MimeHandlerViewGuest::OpenURLFromTab(
     WebContents* source,
     const content::OpenURLParams& params) {
   return embedder_web_contents()->GetDelegate()->OpenURLFromTab(
       embedder_web_contents(), params);
 }
@@ skipping 89 matching lines @@
   }
 }
 
 base::WeakPtr<StreamContainer> MimeHandlerViewGuest::GetStream() const {
   if (!stream_)
     return base::WeakPtr<StreamContainer>();
   return stream_->GetWeakPtr();
 }
 
 }  // namespace extensions