Add title to current page in zero suggest.

chrome/browser/ui/omnibox/chrome_omnibox_client.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 "chrome/browser/ui/omnibox/chrome_omnibox_client.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
 #include "chrome/browser/autocomplete/chrome_autocomplete_provider_client.h"
 #include "chrome/browser/bitmap_fetcher/bitmap_fetcher_service_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/bookmark_stats.h"
 #include "chrome/browser/command_updater.h"
 #include "chrome/browser/extensions/api/omnibox/omnibox_api.h"
 #include "chrome/browser/net/predictor.h"
@@ skipping 120 matching lines @@
 bool ChromeOmniboxClient::CurrentPageExists() const {
   return (controller_->GetWebContents() != nullptr);
 }
 
 const GURL& ChromeOmniboxClient::GetURL() const {
   return CurrentPageExists() ? controller_->GetWebContents()->GetVisibleURL()
                              : GURL::EmptyGURL();
 }
 
 const base::string16& ChromeOmniboxClient::GetTitle() const {
-  return controller_->GetWebContents()->GetTitle();
+  return CurrentPageExists() ? controller_->GetWebContents()->GetTitle()
+                             : base::EmptyString16();
 }
 
 gfx::Image ChromeOmniboxClient::GetFavicon() const {
   return favicon::ContentFaviconDriver::FromWebContents(
              controller_->GetWebContents())
       ->GetFavicon();
 }
 
 bool ChromeOmniboxClient::IsInstantNTP() const {
   return search::IsInstantNTP(controller_->GetWebContents());
@@ skipping 331 matching lines @@
       InstantSearchPrerenderer::GetForProfile(profile_);
   if (prerenderer)
     prerenderer->Prerender(suggestion);
 }
 
 void ChromeOmniboxClient::OnBitmapFetched(const BitmapFetchedCallback& callback,
                                           const SkBitmap& bitmap) {
   request_id_ = BitmapFetcherService::REQUEST_ID_INVALID;
   callback.Run(bitmap);
 }