Componentize AutocompleteController and its supporting cast

chrome/browser/autocomplete/autocomplete_classifier.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 "chrome/browser/autocomplete/autocomplete_classifier.h"
-
-#include "base/auto_reset.h"
-#include "chrome/browser/autocomplete/autocomplete_controller.h"
-#include "components/metrics/proto/omnibox_event.pb.h"
-#include "components/omnibox/autocomplete_input.h"
-#include "components/omnibox/autocomplete_match.h"
-#include "components/omnibox/autocomplete_provider.h"
-#include "url/gurl.h"
-
-// static
-const int AutocompleteClassifier::kDefaultOmniboxProviders =
-    AutocompleteProvider::TYPE_BOOKMARK |
-    AutocompleteProvider::TYPE_BUILTIN |
-    AutocompleteProvider::TYPE_HISTORY_QUICK |
-    AutocompleteProvider::TYPE_HISTORY_URL |
-    AutocompleteProvider::TYPE_KEYWORD |
-    AutocompleteProvider::TYPE_SEARCH |
-    AutocompleteProvider::TYPE_SHORTCUTS |
-    AutocompleteProvider::TYPE_ZERO_SUGGEST;
-
-AutocompleteClassifier::AutocompleteClassifier(
-    scoped_ptr<AutocompleteController> controller,
-    scoped_ptr<AutocompleteSchemeClassifier> scheme_classifier)
-    : controller_(controller.Pass()),
-      scheme_classifier_(scheme_classifier.Pass()),
-      inside_classify_(false) {
-}
-
-AutocompleteClassifier::~AutocompleteClassifier() {
-  // We should only reach here after Shutdown() has been called.
-  DCHECK(!controller_.get());
-}
-
-void AutocompleteClassifier::Classify(
-    const base::string16& text,
-    bool prefer_keyword,
-    bool allow_exact_keyword_match,
-    metrics::OmniboxEventProto::PageClassification page_classification,
-    AutocompleteMatch* match,
-    GURL* alternate_nav_url) {
-  DCHECK(!inside_classify_);
-  base::AutoReset<bool> reset(&inside_classify_, true);
-  controller_->Start(AutocompleteInput(
-      text, base::string16::npos, std::string(), GURL(), page_classification,
-      true, prefer_keyword, allow_exact_keyword_match, false, false,
-      *scheme_classifier_));
-  DCHECK(controller_->done());
-  const AutocompleteResult& result = controller_->result();
-  if (result.empty()) {
-    if (alternate_nav_url)
-      *alternate_nav_url = GURL();
-    return;
-  }
-
-  DCHECK(result.default_match() != result.end());
-  *match = *result.default_match();
-  if (alternate_nav_url)
-    *alternate_nav_url = result.alternate_nav_url();
-}
-
-void AutocompleteClassifier::Shutdown() {
-  controller_.reset();
-}