Removed unused includes of observer file.

Telegram/SourceFiles/boxes/download_path_box.h

@@ -7,8 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "boxes/abstract_box.h"
-#include "base/observer.h"
+#include "ui/layers/box_content.h"
 
 namespace Ui {
 template <typename Enum>

Telegram/SourceFiles/core/file_utilities.h

@@ -7,8 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
-
 namespace Main {
 class Session;
 } // namespace Main

Telegram/SourceFiles/history/history.h

@@ -12,8 +12,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_drafts.h"
 #include "data/data_thread.h"
 #include "history/view/history_view_send_action.h"
-#include "base/observer.h"
-#include "base/timer.h"
 #include "base/variant.h"
 #include "base/flat_set.h"
 #include "base/flags.h"
@@ -47,7 +45,7 @@ struct ForwardDraft {
 	MessageIdsList ids;
 	ForwardOptions options = ForwardOptions::PreserveInfo;
 
-	friend inline constexpr auto operator<=>(
+	friend inline auto operator<=>(
 		const ForwardDraft&,
 		const ForwardDraft&) = default;
 };

Telegram/SourceFiles/mtproto/mtproto_dc_options.h

@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
 #include "base/bytes.h"
 
 #include <QtCore/QReadWriteLock>

Telegram/SourceFiles/profile/profile_block_widget.h

@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
 #include "ui/rp_widget.h"
 
 namespace Profile {

Telegram/SourceFiles/storage/file_download.h

@@ -7,8 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "base/observer.h"
-#include "base/timer.h"
 #include "base/binary_guard.h"
 #include "base/weak_ptr.h"
 

Telegram/SourceFiles/storage/file_download_web.cpp

@@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "storage/cache/storage_cache_types.h"
 #include "base/qt/qt_common_adapters.h"
+#include "base/timer.h"
 #include "base/weak_ptr.h"
 
 #include <QtNetwork/QAuthenticator>

Telegram/SourceFiles/window/notifications_manager.h

@@ -8,8 +8,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 #include "data/data_message_reaction_id.h"
-#include "base/observer.h"
 #include "base/timer.h"
+#include "base/type_traits.h"
 
 class History;