[Media Router] Consistently refer to issue's learn more help page by ID.

chrome/browser/ui/toolbar/media_router_action_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 "base/macros.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_action_test_util.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/toolbar/media_router_action.h"
@@ skipping 58 matching lines @@
   MediaRouterActionUnitTest()
       : toolbar_model_(nullptr),
         fake_issue_notification_(media_router::Issue(
             "title notification",
             "message notification",
             media_router::IssueAction(media_router::IssueAction::TYPE_DISMISS),
             std::vector<media_router::IssueAction>(),
             "route_id",
             media_router::Issue::NOTIFICATION,
             false,
-            std::string())),
+            -1)),
         fake_issue_warning_(
             media_router::Issue("title warning",
                                 "message warning",
                                 media_router::IssueAction(
                                     media_router::IssueAction::TYPE_LEARN_MORE),
                                 std::vector<media_router::IssueAction>(),
                                 "route_id",
                                 media_router::Issue::WARNING,
                                 false,
-                                "www.google.com")),
+                                12345)),
         fake_issue_fatal_(media_router::Issue(
             "title fatal",
             "message fatal",
             media_router::IssueAction(media_router::IssueAction::TYPE_DISMISS),
             std::vector<media_router::IssueAction>(),
             "route_id",
             media_router::Issue::FATAL,
             true,
-            std::string())),
+            -1)),
         fake_source1_("fakeSource1"),
         fake_source2_("fakeSource2"),
         active_icon_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
             IDR_MEDIA_ROUTER_ACTIVE_ICON)),
         error_icon_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
             IDR_MEDIA_ROUTER_ERROR_ICON)),
         idle_icon_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
             IDR_MEDIA_ROUTER_IDLE_ICON)),
         warning_icon_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
             IDR_MEDIA_ROUTER_WARNING_ICON)) {}
@@ skipping 240 matching lines @@
 
   EXPECT_CALL(*mock_delegate, OnPopupClosed()).Times(1);
   dialog_controller_->HideMediaRouterDialog();
 
   EXPECT_CALL(*mock_delegate, OnPopupShown(true)).Times(1);
   dialog_controller_->CreateMediaRouterDialog();
 
   EXPECT_CALL(*mock_delegate, OnPopupClosed()).Times(1);
   dialog_controller_->HideMediaRouterDialog();
 }