[WIP] Fire a theme changed notification when device scan completes

chrome/browser/themes/theme_service.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_THEMES_THEME_SERVICE_H_
 #define CHROME_BROWSER_THEMES_THEME_SERVICE_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "build/build_config.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/base/theme_provider.h"
+#include "ui/events/devices/input_device_event_observer.h"
 
 class CustomThemeSupplier;
 class BrowserThemePack;
 class ThemeSyncableService;
 class Profile;
 
 namespace base {
 class FilePath;
 }
 
@@ skipping 19 matching lines @@
 
 #ifdef __OBJC__
 @class NSString;
 // Sent whenever the browser theme changes.  Object => NSValue wrapping the
 // ThemeService that changed.
 extern "C" NSString* const kBrowserThemeDidChangeNotification;
 #endif  // __OBJC__
 
 class ThemeService : public base::NonThreadSafe,
                      public content::NotificationObserver,
+                     public ui::InputDeviceEventObserver,
                      public KeyedService {
  public:
   // Public constants used in ThemeService and its subclasses:
   static const char kDefaultThemeID[];
 
   ThemeService();
   ~ThemeService() override;
 
   virtual void Init(Profile* profile);
 
   // KeyedService:
   void Shutdown() override;
 
   // Overridden from content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
+  // ui::InputDeviceEventObserver:
+  void OnDeviceListsComplete() override;
+
   // Set the current theme to the theme defined in |extension|.
   // |extension| must already be added to this profile's
   // ExtensionService.
   virtual void SetTheme(const extensions::Extension* extension);
 
   // Reset the theme to default.
   virtual void UseDefaultTheme();
 
   // Set the current theme to the system theme. On some platforms, the system
   // theme is the default theme.
@@ skipping 233 matching lines @@
 
   BrowserThemeProvider original_theme_provider_;
   BrowserThemeProvider incognito_theme_provider_;
 
   base::WeakPtrFactory<ThemeService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ThemeService);
 };
 
 #endif  // CHROME_BROWSER_THEMES_THEME_SERVICE_H_