Combine boolean MediaDeviceNotifications histograms to an enumerated histogram.

chrome/browser/system_monitor/removable_device_notifications_window_win.cc

 // 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.
 
 #include "chrome/browser/system_monitor/removable_device_notifications_window_win.h"
 
 #include <windows.h>
 #include <dbt.h>
 
 #include <string>
@@ skipping 138 matching lines @@
           this, id, device_name, path));
 }
 
 void
 RemovableDeviceNotificationsWindowWin::ProcessRemovableDeviceAttachedOnUIThread(
     const std::string& id,
     const FilePath::StringType& device_name,
     const FilePath& path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
+  // TODO(kmadhusu) Record device info histogram.
   SystemMonitor::Get()->ProcessRemovableStorageAttached(id,
                                                         device_name,
                                                         path.value());
 }
 
 LRESULT CALLBACK RemovableDeviceNotificationsWindowWin::WndProc(
     HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) {
   switch (message) {
     case WM_DEVICECHANGE:
       return OnDeviceChange(static_cast<UINT>(wparam),
@@ skipping 13 matching lines @@
     LPARAM lparam) {
   RemovableDeviceNotificationsWindowWin* msg_wnd =
       reinterpret_cast<RemovableDeviceNotificationsWindowWin*>(
           GetWindowLongPtr(hwnd, GWLP_USERDATA));
   if (msg_wnd)
     return msg_wnd->WndProc(hwnd, message, wparam, lparam);
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }
 
 }  // namespace chrome