Function to count dialog box creations.

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 168 matching lines @@
                    content::WebContents* web_contents,
                    const gfx::Point& anchor);
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ContentSettingBubbleViewsBridge);
 };
 
 #endif  // OS_MACOSX
 
 #endif  // TOOLKIT_VIEWS
 
+// Values used in the Dialog.Creation UMA metric. Each value represents a
+// different type of dialog box.
+// These values are written to logs. New enum values can be added, but existing
+// enums must never be renumbered or deleted and reused.
+enum class DialogIdentifier { UNKNOWN = 0, TRANSLATE = 1, MAX_VALUE };
+
+// Record an UMA metric counting the creation of a dialog box of this type.
+void RecordDialogCreation(DialogIdentifier identifier);
+
 }  // namespace chrome
 
 #if defined(OS_CHROMEOS)
 
 // This callback informs the package name of the app selected by the user, along
 // with the reason why the Bubble was closed. The string param must have a valid
 // package name, except when the CloseReason is ERROR or DIALOG_DEACTIVATED, for
 // these cases we return a dummy value which won't be used at all and has no
 // significance.
 using IntentPickerResponse =
     base::Callback<void(const std::string&,
                         arc::ArcNavigationThrottle::CloseReason)>;
 
 // Return a pointer to the IntentPickerBubbleView::ShowBubble method.
 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_