[Media Router] Remove RouteIDManager.

Remove RouteIDManager as it is not and will not be used.

BUG=461815

Review URL: https://codereview.chromium.org/1143453005

Cr-Commit-Position: refs/heads/master@{#330263}

chrome/browser/media/router/media_router.gypi

@@ -31,8 +31,6 @@
       'media_source_helper.h',
       'presentation_media_sinks_observer.cc',
       'presentation_media_sinks_observer.h',
-      'route_id_manager.cc',
-      'route_id_manager.h',
     ],
     'media_router_test_support_sources': [
       'mock_media_router.cc',

chrome/browser/media/router/route_id_manager.cc

-// Copyright 2015 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/media/router/route_id_manager.h"
-
-#include "base/memory/singleton.h"
-#include "base/strings/string_number_conversions.h"
-#include "chrome/browser/media/router/media_route.h"
-
-namespace media_router {
-
-const char kLocalRoutePrefix[] = "route-local-";
-
-RouteIDManager::RouteIDManager() : next_local_id_(0) {}
-
-std::string RouteIDManager::ForLocalRoute() {
-  DCHECK(CalledOnValidThread());
-  return kLocalRoutePrefix + base::Uint64ToString(next_local_id_++);
-}
-
-// static
-RouteIDManager* RouteIDManager::GetInstance() {
-  return Singleton<RouteIDManager>::get();
-}
-
-}  // namespace media_router

chrome/browser/media/router/route_id_manager.h

-// Copyright 2015 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.
-
-#ifndef CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/singleton.h"
-#include "base/threading/non_thread_safe.h"
-
-namespace media_router {
-
-class MediaRoute;
-
-// Shared singleton which coordinates the assignment of unique IDs to
-// MediaRoute objects.
-// Class is not threadsafe; IDs should be created on the same thread.
-class RouteIDManager : public base::NonThreadSafe {
- public:
-  static RouteIDManager* GetInstance();
-
-  std::string ForLocalRoute();
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(RouteIDManagerTest, ForLocalRoute);
-  friend struct DefaultSingletonTraits<RouteIDManager>;
-
-  RouteIDManager();
-
-  // Monotonically increasing ID number.
-  uint64 next_local_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(RouteIDManager);
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_

chrome/browser/media/router/route_id_manager_unittest.cc

-// Copyright 2015 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/media/router/route_id_manager.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace media_router {
-
-TEST(RouteIDManagerTest, ForLocalRoute) {
-  // Singleton instance is left unused for better test isolation.
-  RouteIDManager manager1;
-  EXPECT_EQ("route-local-0", manager1.ForLocalRoute());
-  EXPECT_EQ("route-local-1", manager1.ForLocalRoute());
-
-  RouteIDManager manager2;
-  EXPECT_EQ("route-local-0", manager2.ForLocalRoute());
-}
-
-}  // namespace media_router

chrome/chrome_tests_unit.gypi

@@ -1429,7 +1429,6 @@
       'browser/media/router/media_source_helper_unittest.cc',
       'browser/media/router/media_source_unittest.cc',
       'browser/media/router/presentation_media_sinks_observer_unittest.cc',
-      'browser/media/router/route_id_manager_unittest.cc',
       'browser/ui/webui/media_router/media_cast_mode_unittest.cc',
       'browser/ui/webui/media_router/media_router_dialog_controller_unittest.cc',
       'browser/ui/webui/media_router/media_router_test.cc',