Cleanup: Remove partial InstantSearch implementation on Android

chrome/browser/android/omnibox/autocomplete_controller_android.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 "chrome/browser/android/omnibox/autocomplete_controller_android.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
 #include "chrome/browser/autocomplete/chrome_autocomplete_provider_client.h"
 #include "chrome/browser/autocomplete/chrome_autocomplete_scheme_classifier.h"
 #include "chrome/browser/autocomplete/shortcuts_backend_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/predictors/autocomplete_action_predictor.h"
 #include "chrome/browser/predictors/autocomplete_action_predictor_factory.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile_android.h"
 #include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/search/search.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
-#include "chrome/browser/ui/search/instant_search_prerenderer.h"
 #include "chrome/common/pref_names.h"
-#include "chrome/common/search/instant_types.h"
 #include "chrome/common/url_constants.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/metrics/proto/omnibox_event.pb.h"
 #include "components/omnibox/browser/autocomplete_classifier.h"
 #include "components/omnibox/browser/autocomplete_controller.h"
 #include "components/omnibox/browser/autocomplete_input.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/omnibox/browser/autocomplete_match_type.h"
 #include "components/omnibox/browser/omnibox_event_global_tracker.h"
 #include "components/omnibox/browser/omnibox_field_trial.h"
 #include "components/omnibox/browser/omnibox_log.h"
 #include "components/omnibox/browser/search_provider.h"
 #include "components/prefs/pref_service.h"
-#include "components/search/search.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/toolbar/toolbar_model.h"
 #include "components/url_formatter/url_formatter.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "jni/AutocompleteController_jni.h"
 #include "net/base/escape.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 
 using base::android::AttachCurrentThread;
@@ skipping 275 matching lines @@
 AutocompleteControllerAndroid::~AutocompleteControllerAndroid() {
 }
 
 void AutocompleteControllerAndroid::InitJNI(JNIEnv* env, jobject obj) {
   weak_java_autocomplete_controller_android_ =
       JavaObjectWeakGlobalRef(env, obj);
 }
 
 void AutocompleteControllerAndroid::OnResultChanged(
     bool default_match_changed) {
-  if (!autocomplete_controller_)
-    return;
-
-  const AutocompleteResult& result = autocomplete_controller_->result();
-  const AutocompleteResult::const_iterator default_match(
-      result.default_match());
-  if ((default_match != result.end()) && default_match_changed &&
-      search::IsInstantExtendedAPIEnabled() &&
-      search::ShouldPrefetchSearchResults()) {
-    InstantSuggestion prefetch_suggestion;
-    // If the default match should be prefetched, do that.
-    if (SearchProvider::ShouldPrefetch(*default_match)) {
-      prefetch_suggestion.text = default_match->contents;
-      prefetch_suggestion.metadata =
-          SearchProvider::GetSuggestMetadata(*default_match);
-    }
-    // Send the prefetch suggestion unconditionally to the Instant search base
-    // page. If there is no suggestion to prefetch, we need to send a blank
-    // query to clear the prefetched results.
-    InstantSearchPrerenderer* prerenderer =
-        InstantSearchPrerenderer::GetForProfile(profile_);
-    if (prerenderer)
-      prerenderer->Prerender(prefetch_suggestion);
-  }
-  if (!inside_synchronous_start_)
+  if (autocomplete_controller_ && !inside_synchronous_start_)
     NotifySuggestionsReceived(autocomplete_controller_->result());
 }
 
 void AutocompleteControllerAndroid::NotifySuggestionsReceived(
     const AutocompleteResult& autocomplete_result) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> java_bridge =
       weak_java_autocomplete_controller_android_.get(env);
   if (!java_bridge.obj())
     return;
@@ skipping 243 matching lines @@
     return;
 
   // ZeroSuggestPrefetcher deletes itself after it's done prefetching.
   new ZeroSuggestPrefetcher(profile);
 }
 
 // Register native methods
 bool RegisterAutocompleteControllerAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }