Enable find-in-page across GuestViews.

extensions/browser/guest_view/extension_options/extension_options_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/extension_options/extension_options_guest.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
@@ skipping 136 matching lines @@
 void ExtensionOptionsGuest::OnPreferredSizeChanged(const gfx::Size& pref_size) {
   extension_options_internal::PreferredSizeChangedOptions options;
   // Convert the size from physical pixels to logical pixels.
   options.width = PhysicalPixelsToLogicalPixels(pref_size.width());
   options.height = PhysicalPixelsToLogicalPixels(pref_size.height());
   DispatchEventToView(base::MakeUnique<GuestViewEvent>(
       extension_options_internal::OnPreferredSizeChanged::kEventName,
       options.ToValue()));
 }
 
-bool ExtensionOptionsGuest::ShouldHandleFindRequestsForEmbedder() const {
-  return true;
-}
-
 WebContents* ExtensionOptionsGuest::OpenURLFromTab(
     WebContents* source,
     const content::OpenURLParams& params) {
   if (!extension_options_guest_delegate_)
     return nullptr;
 
   // Don't allow external URLs with the CURRENT_TAB disposition be opened in
   // this guest view, change the disposition to NEW_FOREGROUND_TAB.
   if ((!params.url.SchemeIs(extensions::kExtensionScheme) ||
        params.url.host() != options_page_.host()) &&
@@ skipping 61 matching lines @@
   guest_zoom_controller->SetZoomMode(zoom::ZoomController::ZOOM_MODE_ISOLATED);
   SetGuestZoomLevelToMatchEmbedder();
 
   if (!url::IsSameOriginWith(navigation_handle->GetURL(), options_page_)) {
     bad_message::ReceivedBadMessage(web_contents()->GetRenderProcessHost(),
                                     bad_message::EOG_BAD_ORIGIN);
   }
 }
 
 }  // namespace extensions