Prepare AutocompleteController for componentization

components/omnibox/history_quick_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/history_quick_provider.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/debug/crash_logging.h"
@@ skipping 28 matching lines @@
 // Used to help investigate bug 464926.  NOTE: This value is defined multiple
 // places in the codebase due to layering issues. DO NOT change the value here
 // without changing it in all other places that it is defined in the codebase
 // (search for |kBug464926CrashKey|).
 const char kBug464926CrashKey[] = "bug-464926-info";
 
 }  // namespace
 
 bool HistoryQuickProvider::disabled_ = false;
 
-HistoryQuickProvider::HistoryQuickProvider(
-    AutocompleteProviderClient* client,
-    InMemoryURLIndex* in_memory_url_index)
+HistoryQuickProvider::HistoryQuickProvider(AutocompleteProviderClient* client)
     : HistoryProvider(AutocompleteProvider::TYPE_HISTORY_QUICK, client),
       languages_(client->GetAcceptLanguages()),
-      in_memory_url_index_(in_memory_url_index) {
+      in_memory_url_index_(client->GetInMemoryURLIndex()) {
 }
 
 void HistoryQuickProvider::Start(const AutocompleteInput& input,
                                  bool minimal_changes) {
   matches_.clear();
   if (disabled_ || input.from_omnibox_focus())
     return;
 
   // Don't bother with INVALID and FORCED_QUERY.
   if ((input.type() == metrics::OmniboxInputType::INVALID) ||
@@ skipping 207 matching lines @@
   match.description = info.title();
   match.description_class = SpansFromTermMatch(
       history_match.title_matches, match.description.length(), false);
 
   match.RecordAdditionalInfo("typed count", info.typed_count());
   match.RecordAdditionalInfo("visit count", info.visit_count());
   match.RecordAdditionalInfo("last visit", info.last_visit());
 
   return match;
 }