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

chrome/browser/themes/theme_service.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/themes/theme_service.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 23 matching lines @@
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 #include "grit/components_scaled_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/layout.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/events/devices/device_data_manager.h"
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/native_theme/common_theme.h"
 #include "ui/native_theme/native_theme.h"
 
 #if defined(ENABLE_EXTENSIONS)
 #include "extensions/browser/extension_registry_observer.h"
 #endif
 
 #if defined(ENABLE_SUPERVISED_USERS)
@@ skipping 152 matching lines @@
     : ready_(false),
       rb_(ResourceBundle::GetSharedInstance()),
       profile_(nullptr),
       installed_pending_load_id_(kDefaultThemeID),
       number_of_infobars_(0),
       original_theme_provider_(*this, false),
       incognito_theme_provider_(*this, true),
       weak_ptr_factory_(this) {}
 
 ThemeService::~ThemeService() {
+  if (ui::DeviceDataManager::HasInstance())
+    ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
   FreePlatformCaches();
 }
 
 void ThemeService::Init(Profile* profile) {
   DCHECK(CalledOnValidThread());
   profile_ = profile;
 
+  if (ui::DeviceDataManager::HasInstance())
+    ui::DeviceDataManager::GetInstance()->AddObserver(this);  // move to ctor?
+
   LoadThemePrefs();
 
   registrar_.Add(this,
                  extensions::NOTIFICATION_EXTENSIONS_READY_DEPRECATED,
                  content::Source<Profile>(profile_));
 
   theme_syncable_service_.reset(new ThemeSyncableService(profile_, this));
 }
 
 void ThemeService::Shutdown() {
@@ skipping 17 matching lines @@
       const Extension* extension = Details<const Extension>(details).ptr();
       if (extension->is_theme())
         SetTheme(extension);
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
+void ThemeService::OnDeviceListsComplete() {
+  if (ui::MaterialDesignController::DeviceListsComplete())
+    NotifyThemeChanged();
+}
+
 void ThemeService::SetTheme(const Extension* extension) {
   DCHECK(extension->is_theme());
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();
   if (!service->IsExtensionEnabled(extension->id())) {
     // |extension| is disabled when reverting to the previous theme via an
     // infobar.
     service->EnableExtension(extension->id());
     // Enabling the extension will call back to SetTheme().
     return;
@@ skipping 589 matching lines @@
 
 #if defined(ENABLE_SUPERVISED_USERS)
 bool ThemeService::IsSupervisedUser() const {
   return profile_->IsSupervised();
 }
 
 void ThemeService::SetSupervisedUserTheme() {
   SetCustomDefaultTheme(new SupervisedUserTheme);
 }
 #endif