Cleanup: Remove unused SearchTermsTracker

chrome/browser/search/search_terms_tracker.cc

Index: chrome/browser/search/search_terms_tracker.cc
diff --git a/chrome/browser/search/search_terms_tracker.cc b/chrome/browser/search/search_terms_tracker.cc
deleted file mode 100644
index 444ab5fb49d9e313a798f34d126eb3ef4320b473..0000000000000000000000000000000000000000
--- a/chrome/browser/search/search_terms_tracker.cc
+++ /dev/null
@@ -1,132 +0,0 @@
-// 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/search_terms_tracker.h"
-
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/search_engines/template_url_service_factory.h"
-#include "components/search_engines/template_url.h"
-#include "components/search_engines/template_url_service.h"
-#include "content/public/browser/navigation_controller.h"
-#include "content/public/browser/navigation_entry.h"
-#include "content/public/browser/notification_details.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/notification_source.h"
-#include "content/public/browser/notification_types.h"
-#include "content/public/browser/web_contents.h"
-
-namespace chrome {
-
-SearchTermsTracker::SearchTermsTracker() {
-  registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
-                 content::NotificationService::AllSources());
-  registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_CHANGED,
-                 content::NotificationService::AllSources());
-  registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
-                 content::NotificationService::AllSources());
-}
-
-SearchTermsTracker::~SearchTermsTracker() {
-}
-
-bool SearchTermsTracker::GetSearchTerms(
-    const content::WebContents* contents,
-    base::string16* search_terms,
-    int* navigation_index) const {
-  if (contents) {
-    TabState::const_iterator it = tabs_.find(contents);
-    if (it != tabs_.end() && !it->second.search_terms.empty()) {
-      if (search_terms)
-        *search_terms = it->second.search_terms;
-      if (navigation_index)
-        *navigation_index = it->second.srp_navigation_index;
-      return true;
-    }
-  }
-  return false;
-}
-
-void SearchTermsTracker::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  switch (type) {
-    case content::NOTIFICATION_NAV_ENTRY_COMMITTED:
-    case content::NOTIFICATION_NAV_ENTRY_CHANGED: {
-      content::NavigationController* controller =
-          content::Source<content::NavigationController>(source).ptr();
-      TabData search;
-      if (FindMostRecentSearch(controller, &search))
-        tabs_[controller->GetWebContents()] = search;
-      else
-        RemoveTabData(controller->GetWebContents());
-      break;
-    }
-
-    case content::NOTIFICATION_WEB_CONTENTS_DESTROYED: {
-      RemoveTabData(content::Source<content::WebContents>(source).ptr());
-      break;
-    }
-
-    default:
-      NOTREACHED();
-      return;
-  }
-}
-
-bool SearchTermsTracker::FindMostRecentSearch(
-    const content::NavigationController* controller,
-    SearchTermsTracker::TabData* tab_data) {
-  Profile* profile =
-      Profile::FromBrowserContext(controller->GetBrowserContext());
-  DCHECK(profile);
-  if (!profile)
-    return false;
-
-  TemplateURLService* service =
-      TemplateURLServiceFactory::GetForProfile(profile);
-  TemplateURL* template_url = service->GetDefaultSearchProvider();
-
-  for (int i = controller->GetCurrentEntryIndex(); i >= 0; --i) {
-    content::NavigationEntry* entry = controller->GetEntryAtIndex(i);
-    if (entry->GetPageType() == content::PAGE_TYPE_NORMAL) {
-      if (template_url->IsSearchURL(entry->GetURL(),
-                                    service->search_terms_data())) {
-        // This entry is a search results page. Extract the terms only if this
-        // isn't the last (i.e. most recent/current) entry as we don't want to
-        // record the search terms when we're on an SRP.
-        if (i != controller->GetCurrentEntryIndex()) {
-          tab_data->srp_navigation_index = i;
-          template_url->ExtractSearchTermsFromURL(entry->GetURL(),
-                                                  service->search_terms_data(),
-                                                  &tab_data->search_terms);
-          return true;
-        }
-
-        // We've found an SRP - stop searching (even if we did not record the
-        // search terms, as anything before this entry will be unrelated).
-        break;
-      }
-    }
-
-    // Do not consider any navigations that precede a non-web-triggerable
-    // navigation as they are not related to those terms.
-    if (!ui::PageTransitionIsWebTriggerable(
-            entry->GetTransitionType())) {
-      break;
-    }
-  }
-
-  return false;
-}
-
-void SearchTermsTracker::RemoveTabData(
-    const content::WebContents* contents) {
-  TabState::iterator it = tabs_.find(contents);
-  if (it != tabs_.end()) {
-    tabs_.erase(it);
-  }
-}
-
-}  // namespace chrome