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 7f43fcda865cd07d827adffd62437f59fc2d4653..b9d4c3fcdefebc89273ba646763009ef5b40602b 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;