Log the creation of Sign In related dialog boxes.

chrome/browser/ui/browser_dialogs.h

 // Copyright (c) 2012 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_UI_BROWSER_DIALOGS_H_
 #define CHROME_BROWSER_UI_BROWSER_DIALOGS_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 215 matching lines @@
   CRITICAL_NOTIFICATION = 17,
   IME_WARNING = 18,
   TOOLBAR_ACTIONS_BAR = 19,
   GLOBAL_ERROR = 20,
   EXTENSION_INSTALL = 21,
   EXTENSION_UNINSTALL = 22,
   EXTENSION_INSTALLED = 23,
   PAYMENT_REQUEST = 24,
   SAVE_CARD = 25,
   CARD_UNMASK = 26,
+  SIGN_IN_EXISTING_DATA = 27,

[msarda, 2017/05/02 09:55:03]

This is the regular sign-in screen, so just name this SIGN_IN

+  SIGN_IN_SYNC_CONFIRMATION = 28,
+  SIGN_IN_ERROR = 29,
+  SIGN_IN_EMAIL_CONFIRMATION = 30,
+  PROFILE_CHOOSER = 31,
   MAX_VALUE
 };
 
 // Record an UMA metric counting the creation of a dialog box of this type.
 void RecordDialogCreation(DialogIdentifier identifier);
 
 #if defined(OS_WIN)
 
 // Shows the Chrome Cleanup dialog asking the user if they want to clean their
 // system from unwanted software. This is called when unwanted software has been
@@ skipping 20 matching lines @@
 using BubbleShowPtr =
     void (*)(content::WebContents*,
              const std::vector<arc::ArcNavigationThrottle::AppInfo>&,
              const IntentPickerResponse&);
 
 BubbleShowPtr ShowIntentPickerBubble();
 
 #endif  // OS_CHROMEOS
 
 #endif  // CHROME_BROWSER_UI_BROWSER_DIALOGS_H_