Remove MessageLoop::current() from history_url_provider.cc

components/omnibox/browser/history_url_provider.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 "components/omnibox/browser/history_url_provider.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/macros.h"
-#include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/sequenced_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "components/bookmarks/browser/bookmark_utils.h"
 #include "components/history/core/browser/history_backend.h"
 #include "components/history/core/browser/history_database.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/history/core/browser/history_types.h"
 #include "components/metrics/proto/omnibox_input_type.pb.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/omnibox/browser/autocomplete_provider_listener.h"
@@ skipping 391 matching lines @@
     type_ = UNVISITED_INTRANET;
   }
 }
 
 HistoryURLProviderParams::HistoryURLProviderParams(
     const AutocompleteInput& input,
     bool trim_http,
     const AutocompleteMatch& what_you_typed_match,
     TemplateURL* default_search_provider,
     const SearchTermsData& search_terms_data)
-    : message_loop(base::MessageLoop::current()),
+    : origin_task_runner(base::SequencedTaskRunnerHandle::Get()),
       input(input),
       prevent_inline_autocomplete(input.prevent_inline_autocomplete()),
       trim_http(trim_http),
       what_you_typed_match(what_you_typed_match),
       failed(false),
       exact_suggestion_is_in_history(false),
       promote_type(NEITHER),
-      default_search_provider(default_search_provider ?
-          new TemplateURL(default_search_provider->data()) : nullptr),
-      search_terms_data(new SearchTermsDataSnapshot(search_terms_data)) {
-}
+      default_search_provider(
+          default_search_provider
+              ? new TemplateURL(default_search_provider->data())
+              : nullptr),
+      search_terms_data(new SearchTermsDataSnapshot(search_terms_data)) {}
 
 HistoryURLProviderParams::~HistoryURLProviderParams() {
 }
 
 HistoryURLProvider::HistoryURLProvider(AutocompleteProviderClient* client,
                                        AutocompleteProviderListener* listener)
     : HistoryProvider(AutocompleteProvider::TYPE_HISTORY_URL, client),
       listener_(listener),
       params_(nullptr),
       search_url_database_(OmniboxFieldTrial::HUPSearchDatabase()) {
@@ skipping 182 matching lines @@
     params->failed = true;
   } else if (!params->cancel_flag.IsSet()) {
     base::TimeTicks beginning_time = base::TimeTicks::Now();
 
     DoAutocomplete(backend, db, params);
 
     UMA_HISTOGRAM_TIMES("Autocomplete.HistoryAsyncQueryTime",
                         base::TimeTicks::Now() - beginning_time);
   }
 
-  // Return the results (if any) to the main thread.
-  params->message_loop->task_runner()->PostTask(
+  // Return the results (if any) to the originating sequence.
+  params->origin_task_runner->PostTask(
       FROM_HERE, base::Bind(&HistoryURLProvider::QueryComplete, this, params));
 }
 
 HistoryURLProvider::~HistoryURLProvider() {
   // Note: This object can get leaked on shutdown if there are pending
   // requests on the database (which hold a reference to us). Normally, these
   // messages get flushed for each thread. We do a round trip from main, to
   // history, back to main while holding a reference. If the main thread
   // completes before the history thread, the message to delegate back to the
   // main thread will not run and the reference will leak. Therefore, don't do
@@ skipping 537 matching lines @@
     AutocompleteMatch::ClassifyLocationInString(base::string16::npos, 0,
         match.contents.length(), ACMatchClassification::URL,
         &match.contents_class);
   }
   match.description = info.title();
   match.description_class =
       ClassifyDescription(params.input.text(), match.description);
   RecordAdditionalInfoFromUrlRow(info, &match);
   return match;
 }