Introduce a Doodle Fetcher for NTP

chrome/browser/search/instant_service.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/search/instant_service.h"
 
 #include <stddef.h>
+#include <string>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/feature_list.h"
+#include "base/json/json_reader.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/favicon/fallback_icon_service_factory.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/favicon/large_icon_service_factory.h"
 #include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/ntp_tiles/chrome_most_visited_sites_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/instant_io_context.h"
 #include "chrome/browser/search/instant_service_observer.h"
 #include "chrome/browser/search/most_visited_iframe_source.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/search/suggestions/image_decoder_impl.h"
 #include "chrome/browser/search/suggestions/suggestions_service_factory.h"
 #include "chrome/browser/search/thumbnail_source.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/search_engines/ui_thread_search_terms_data.h"
 #include "chrome/browser/thumbnails/thumbnail_list_source.h"
 #include "chrome/browser/ui/search/instant_search_prerenderer.h"
 #include "chrome/browser/ui/webui/fallback_icon_source.h"
 #include "chrome/browser/ui/webui/favicon_source.h"
 #include "chrome/browser/ui/webui/large_icon_source.h"
 #include "chrome/browser/ui/webui/theme_source.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/grit/theme_resources.h"
+#include "components/doodle/doodle_fetcher.h"
 #include "components/favicon/core/fallback_icon_service.h"
 #include "components/favicon/core/large_icon_service.h"
 #include "components/history/core/browser/top_sites.h"
 #include "components/image_fetcher/image_fetcher_impl.h"
 #include "components/keyed_service/core/service_access_type.h"
 #include "components/ntp_tiles/icon_cacher.h"
 #include "components/search/search.h"
 #include "components/search_engines/template_url_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/url_data_source.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/image/image_skia.h"
 
 #if !defined(OS_ANDROID)
 #include "chrome/browser/search/local_ntp_source.h"
 #include "chrome/browser/themes/theme_properties.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #endif
 
 namespace {
 
 const base::Feature kNtpTilesFeature{"NTPTilesInInstantService",
                                      base::FEATURE_DISABLED_BY_DEFAULT};
 
+void ParseJson(
+    const std::string& json,
+    const base::Callback<void(std::unique_ptr<base::Value>)>& success_callback,
+    const base::Callback<void(const std::string&)>& error_callback) {
+  base::JSONReader json_reader;
+  std::unique_ptr<base::Value> value = json_reader.ReadToValue(json);
+  if (value) {
+    success_callback.Run(std::move(value));
+  } else {
+    error_callback.Run(json_reader.GetErrorMessage());
+  }
+}
+
 }  // namespace
 
 InstantService::InstantService(Profile* profile)
     : profile_(profile),
       template_url_service_(TemplateURLServiceFactory::GetForProfile(profile_)),
       weak_ptr_factory_(this) {
   // The initialization below depends on a typical set of browser threads. Skip
   // it if we are running in a unit test without the full suite.
   if (!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI))
     return;
@@ skipping 66 matching lines @@
       FallbackIconServiceFactory::GetForBrowserContext(profile_);
   favicon::LargeIconService* large_icon_service =
       LargeIconServiceFactory::GetForBrowserContext(profile_);
   content::URLDataSource::Add(
       profile_, new FallbackIconSource(fallback_icon_service));
   content::URLDataSource::Add(
       profile_, new FaviconSource(profile_, FaviconSource::FAVICON));
   content::URLDataSource::Add(
       profile_, new LargeIconSource(fallback_icon_service, large_icon_service));
   content::URLDataSource::Add(profile_, new MostVisitedIframeSource());
+
+  DoodleFetcher doodle_fetcher(profile_->GetRequestContext(),
+                               base::Bind(ParseJson));
+  LOG(ERROR) << "DEBUG DoodleFetcher: Fetcher created.";
+  doodle_fetcher.FetchDoodle(base::Bind([](DoodleConfig config) {
+    if (config.error_during_fetch) {
+      LOG(ERROR) << "DEBUG DoodleFetcher: Error during fetch.";
+    }
+    LOG(ERROR) << "DEBUG DoodleFetcher: config.search_url="
+               << config.search_url;
+    LOG(ERROR) << "DEBUG DoodleFetcher: config.large_image.url="
+               << config.large_image.url;
+  }));
+  LOG(ERROR) << "DEBUG DoodleFetcher: Fetch started.";
 }
 
 InstantService::~InstantService() {
   if (template_url_service_)
     template_url_service_->RemoveObserver(this);
 }
 
 void InstantService::AddInstantProcess(int process_id) {
   process_ids_.insert(process_id);
 
@@ skipping 343 matching lines @@
 void InstantService::ResetInstantSearchPrerendererIfNecessary() {
   if (!search::IsInstantExtendedAPIEnabled())
     return;
 
   GURL url(search::GetSearchResultPrefetchBaseURL(profile_));
   if (!instant_prerenderer_ || instant_prerenderer_->prerender_url() != url) {
     instant_prerenderer_.reset(
         url.is_valid() ? new InstantSearchPrerenderer(profile_, url) : nullptr);
   }
 }