Refactor Permissions related method out of ContentBrowserClient.

chrome/browser/permissions/permission_context.cc

+// Copyright 2015 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/permissions/permission_context.h"
+
+#include "chrome/browser/geolocation/geolocation_permission_context.h"
+#include "chrome/browser/geolocation/geolocation_permission_context_factory.h"
+#include "chrome/browser/media/midi_permission_context.h"
+#include "chrome/browser/media/midi_permission_context_factory.h"
+#include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/notifications/desktop_notification_service_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/push_messaging/push_messaging_permission_context.h"
+#include "chrome/browser/push_messaging/push_messaging_permission_context_factory.h"
+#include "content/public/browser/permission_type.h"
+
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+#include "chrome/browser/media/protected_media_identifier_permission_context.h"
+#include "chrome/browser/media/protected_media_identifier_permission_context_factory.h"
+#endif
+
+// static
+PermissionContextBase* PermissionContext::Get(
+    Profile* profile,
+    content::PermissionType permission_type) {
+  // NOTE: the factories used in this method have to stay in sync with
+  // ::GetFactories() below.
+  switch (permission_type) {
+    case content::PermissionType::GEOLOCATION:
+      return GeolocationPermissionContextFactory::GetForProfile(profile);
+    case content::PermissionType::NOTIFICATIONS:
+      return DesktopNotificationServiceFactory::GetForProfile(profile);
+    case content::PermissionType::MIDI_SYSEX:
+      return MidiPermissionContextFactory::GetForProfile(profile);
+    case content::PermissionType::PUSH_MESSAGING:
+      return PushMessagingPermissionContextFactory::GetForProfile(profile);
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+    case content::PermissionType::PROTECTED_MEDIA_IDENTIFIER:
+      return ProtectedMediaIdentifierPermissionContextFactory::GetForProfile(
+          profile);
+#endif
+    default:
+      NOTREACHED() << "No PermissionContext associated with "
+                   << static_cast<int>(permission_type);
+      break;
+  }
+
+  return nullptr;
+}
+
+// static
+const std::list<KeyedServiceBaseFactory*>& PermissionContext::GetFactories() {
+  // NOTE: this list has to stay in sync with the factories used by ::Get().
+  CR_DEFINE_STATIC_LOCAL(std::list<KeyedServiceBaseFactory*>, factories, ());
+
+  if (factories.empty()) {
+    factories.push_back(GeolocationPermissionContextFactory::GetInstance());
+    factories.push_back(DesktopNotificationServiceFactory::GetInstance());
+    factories.push_back(MidiPermissionContextFactory::GetInstance());
+    factories.push_back(PushMessagingPermissionContextFactory::GetInstance());
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+    factories.push_back(
+        ProtectedMediaIdentifierPermissionContextFactory::GetInstance());
+#endif
+  }
+
+  return factories;
+}