Fixed problems related to date conversion function, etc. (google#1173)

* Fixed problems related to date conversion function, etc.

Resolved a minor issue where a recent typographical error temporarily disabled the date conversion function and other functions.

Fix typos:
DATA => DATE
REWRITERS => REWRITER

MOZC_DATA_REWRITER => MOZC_DATE_REWRITER
MOZC_DATE_REWRITERS => MOZC_DATE_REWRITER
MOZC_FORTUNE_REWRITERS => MOZC_FORTUNE_REWRITER

* Fixed an unmodified comment when moving SessionConverter from session/ to engine/.

MOZC_SESSION_SESSION_CONVERTER_INTERFACE_H_ => MOZC_ENGINE_SESSION_CONVERTER_INTERFACE_H_

PiperOrigin-RevId: 723805096

src/engine/engine_converter_interface.h

@@ -245,4 +245,4 @@ class EngineConverterInterface {
 }  // namespace engine
 }  // namespace mozc
 
-#endif  // MOZC_SESSION_SESSION_CONVERTER_INTERFACE_H_
+#endif  // MOZC_ENGINE_SESSION_CONVERTER_INTERFACE_H_

src/rewriter/rewriter.cc

@@ -103,9 +103,9 @@
 #include "rewriter/command_rewriter.h"
 #endif  // MOZC_COMMAND_REWRITER
 
-#ifdef MOZC_DATA_REWRITER
+#ifdef MOZC_DATE_REWRITER
 #include "rewriter/date_rewriter.h"
-#endif  // MOZC_DATA_REWRITER
+#endif  // MOZC_DATE_REWRITER
 
 #ifdef MOZC_FORTUNE_REWRITER
 #include "rewriter/fortune_rewriter.h"
@@ -161,13 +161,13 @@ Rewriter::Rewriter(const engine::Modules &modules) {
         std::make_unique<UserSegmentHistoryRewriter>(pos_matcher, pos_group));
   }
 
-#ifdef MOZC_DATE_REWRITERS
+#ifdef MOZC_DATE_REWRITER
   AddRewriter(std::make_unique<DateRewriter>(dictionary));
-#endif  // MOZC_DATE_REWRITERS
+#endif  // MOZC_DATE_REWRITER
 
-#ifdef MOZC_FORTUNE_REWRITERS
+#ifdef MOZC_FORTUNE_REWRITER
   AddRewriter(std::make_unique<FortuneRewriter>());
-#endif  // MOZC_FORTUNE_REWRITERS
+#endif  // MOZC_FORTUNE_REWRITER
 
 #ifdef MOZC_COMMAND_REWRITER
   AddRewriter(std::make_unique<CommandRewriter>());