Remove WebContents::HasManifest.

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 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/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 3089 matching lines @@
 bool WebContentsImpl::WasRecentlyAudible() {
   return audio_stream_monitor_.WasRecentlyAudible() ||
          (browser_plugin_embedder_ &&
           browser_plugin_embedder_->WereAnyGuestsRecentlyAudible());
 }
 
 void WebContentsImpl::GetManifest(const GetManifestCallback& callback) {
   manifest_manager_host_->GetManifest(GetMainFrame(), callback);
 }
 
-void WebContentsImpl::HasManifest(const HasManifestCallback& callback) {
-  manifest_manager_host_->HasManifest(GetMainFrame(), callback);
-}
-
 void WebContentsImpl::ExitFullscreen(bool will_cause_resize) {
   // Clean up related state and initiate the fullscreen exit.
   GetRenderViewHost()->GetWidget()->RejectMouseLockOrUnlockIfNecessary();
   ExitFullscreenMode(will_cause_resize);
 }
 
 void WebContentsImpl::ResumeLoadingCreatedWebContents() {
   if (delayed_open_url_params_.get()) {
     OpenURL(*delayed_open_url_params_.get());
     delayed_open_url_params_.reset(nullptr);
@@ skipping 2037 matching lines @@
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content