Consolidate javascript_dialog_manager.h and javascript_dialog_manager_impl.h

chrome/browser/devtools/devtools_sanity_browsertest.cc

Index: chrome/browser/devtools/devtools_sanity_browsertest.cc
diff --git a/chrome/browser/devtools/devtools_sanity_browsertest.cc b/chrome/browser/devtools/devtools_sanity_browsertest.cc
index c80de2c4c35757c4f05daae8bb9f51da25cf18a2..7d93dd092b865de85749761bef1ddf8573a2cfea 100644
--- a/chrome/browser/devtools/devtools_sanity_browsertest.cc
+++ b/chrome/browser/devtools/devtools_sanity_browsertest.cc
@@ -51,6 +51,9 @@
 #include "net/socket/tcp_listen_socket.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
 
+using app_modal_dialogs::AppModalDialog;
+using app_modal_dialogs::JavaScriptAppModalDialog;
+using app_modal_dialogs::NativeAppModalDialog;
 using content::BrowserThread;
 using content::DevToolsAgentHost;
 using content::NavigationController;